Supercharge the 2GR, it's all bolt on.
 
Alcantara is a synthetic suede, but it's much higher quality, google it. It's what Ferrari and Lamborghini use along with the new Toyota 86/Subaru BRZ, I'm sure you'll find it's not much more expensive than leather at all, and probably cheaper than premium Italian leather.
 
You really need to do your research man, Hydrogen is neither easy nor cheap to produce. It is in high abundance but no one has discovered an easy way to harvest pure hydrogen for use as a fuel source. Current methods are complicated but indeed it would be the way of the future if you can overcome the issues mentioned above. I do not know of a single hydrogen petrol station in Australia.
 
E85 however is easy to produce, as the name suggests its a Biofuel with approximately 85% blended ethanol from plant byproduct.
E85 is readily available at a lot of petrol stations and is relatively easy to convert your engine to run it, basically all you need are bigger injectors, fuel lines, higher flowing fuel pump and a flex sensor if you want to run regular fuel when E85 is not available, then a tune to make the most of it.
 
The power gains on E85 are significant due to the anti-knock properties (premature detonation) it has. It's the next best thing to full blown race car fuel.
 
This is what the Abflug 918 kit looks like, will cost you about 20k for everything including the lights:
 

Hmm interesting thread with interesting answers!
Sometime down the track I also want a daily electric car since I do well under 100km per day of driving. Just plug it in at night and watch the savings and know that you are doing everyone a favour of reducing suburban/urban emissions. This seems like a good benchmark:
http://www.evalbum.com/4003
 
Cold nuclear fusion would be a scientist's wet dream, I have not looked too much too it as it seems too much of a hassle for private transport (we need a proper working reactor first and foremost commercially).
 
Again not having expert opinion on this, I think LPG is better in the short term (~50 years) than biofuels simply because we have the infrastructure already in Australia. Basically I want to drive interstate (and on trackdays!) without fear of running empty if my car runs only on E85. That is currently not possible between Melb and Sydney when I checked United fuel stations about a week ago.
However there are flexfuel kits for conventional petrol cars so they can run on both and ethanol conversions and are much cheaper/easier compared to proper liquid injection LPG conv. However being a treehugger myself (yes I hug myself lol) I also want to reduce our foreign oil dependancy which I think is better for the country anyways.
 
Hydrogen cars are false economy, it takes more energy to produce it than to use it, kinda like the idea of bottled water...
 
If you allow me to be selfish...
For my ULTIMATE MR-S build personally I would do a 2ZZ-GE, stroke it to 2.0L and turbocharge it running on E85 with lots of boost. I would strip it out and enter World Time Attack Clubsprint class and create a little history for myself and my fiesty little MR2 lol. As much as I love the 2GR it requires a lot of work and I would have to enter open class in which the competition's pockets are too far deep for me to delve into...
 
This is an interesting article for those inclined to a greener future
http://www.autospeed.com/cms/A_110155/article.html

That's a cool sounding EV MR-S, A chap over on Toymods has a really well done EV Sera and his build thread is amazing to read, in fact all his cars are. Only thing is EV isn't cheap so realistically you aren't being much more sustainable by doing it, not unless you charge it via your own personal wind farm and run it for over 50 years, then the cost and emissions for production finally become neutral.
 
E85 when not being used as a racecar-like fuel does reduce emissions compared to regular fuel, but still not as much as LPG, I believe production of biofuel is a much more innovative field than LPG mining though.
Flex kits are definitely a good stopgap solution until E85 is much more widespread. Hell even in rural areas it's hard enough finding 98RON petrol, which is a pain when your car is 98-only.

Interesting I will have to read up on thay EV Sera guy's thread sometime. Yes I almost forgot the car can't be completely zero emissions if the electricity didn't come from renewable; currently solar and wind being easiest to obtain domestically but most of the driving is done during the day...
 
I have read that ethanol produces a different type of emission but that can be filtered. I guess I can understand the need for 98 may not be as in demand in those regional areas but I would have thought most modern ICE cars have a knock sensor to retard the timing?

Something to keep in mind is even if you spend $40k modifying this car you will probably struggle to get anywhere close to half that when it comes time to sell if you plan on ever selling it. If it was me personally I'd spend 60k on a Lotus exige instead like this:
http://www.carsales.com.au/dealer/details/Lotus-Exige-2007/AGC-AD-15257112/?Cr=5&sdmvc=1
Has the Alcantara Trim your after, is light weight does 0-100 in 4.3, is street legal, rear engined etc.....I believe its a much better car for probably close to the same amount you want to spend.

Tree
Interesting I will have to read up on thay EV Sera guy's thread sometime. Yes I almost forgot the car can't be completely zero emissions if the electricity didn't come from renewable; currently solar and wind being easiest to obtain domestically but most of the driving is done during the day...
 
I have read that ethanol produces a different type of emission but that can be filtered. I guess I can understand the need for 98 may not be as in demand in those regional areas but I would have thought most modern ICE cars have a knock sensor to retard the timing?

Yep knock sensor will retard the timing, but it's still not enough to run a 98-only car on 95RON, a complete retune is needed.
The number of 98-only cars is pretty thin on the ground though, usually only deals with Imports which are still tuned to run on Japan's awesome 100RON GoFast(tm) juice.
Just so happens I had an aussie delivered 98-only soobie though, because running trim was identical to the JDM version, and even with the ADM tune it was still not conservative enough for 95.
 
You just learn to live with it though, make sure you have a 3G connection and run something like the BP app on your phone, or do your research before you head out into rural areas. I drove ACT to Adelaide and back, didn't really need to deviate anywhere to get BP Ultimate, just planned my fuel stops so I knew I could drive to the next station in less than 600kms.
 
Exige would be a lot more logical choice, but for those that love competition audio and show cars, they wouldn't look twice at a nice Exige compared to an over the top, vulgar MR-S modified to barely resemble what it used to be.
Funny crowd they are.

2GR supercharged is the complete opposite to a high revving NA, the power band is down low and you have instant torque on tap thanks to the SC. NA's you have to thrash the **** out of them to get them INTO the power band, let alone keeping them there.
Also doesn't matter if you have some trick valvetrain, your lubrication system won't handle anywhere near those revs without reverting to non-street legal, race technologies.
 
Why not just buy a bike engine, like a Hayabusa, they rev to like 15k? Oh yeah that's right, you can't street legally drive one of those either.
 
Considering you won't even be able to drive such a car for a few years, why are you even throwing around these ideas? You're basically talking out your ass ;)
 
You aren't a billion dollar car manufacturer who can turn out a concept car, you are a 19 year old with no expenses in life so your apparent high income leaves you with way too much disposable cash.
 
You remind me of a guy I used to work with, reckoned he was never going to buy a house because he could just get a loan for an Audi R8 instead, since they were cheaper.

Maj is spot on here!
All talk and no real action

Don't put the motor in now. If you are intent on building somthing crazy take your time then drop it in when you're off your opens

Honestly put a stock motor in and learn to drive the car FAST. Don't just compensate lack of skill with more power.

Ok, there's the car with vic plates. Post a pic up with you in the drivers seat and maybe i'll believe that this isn't just trolling.

You have to understand from our perspective a lot of this sounds like a joke.

You're talking about hydrogen powered cars, F1 valve train systems for super high rpms in a street car. 
Alot of people come on here, have this fantastic idea about how they're going to do this AMAZING conversion and build, then they dissapear or sell up and buy somthing more expensive

Or you do a totenkopf and build a mental mr2 and then upgrade to a lotus :)