Awesome! I was sooo close to going in this direction for my car. If the 2GR half cut hadn't have popped up this would have been my build. K24 NA for a circuit car would be a killer.
 
Honda gear ratios are definitely better. 8500 rpm won't play well with the E153 long gearing. Will be interesting to see how the Honda box holds up with big torque/hp in a mid engine layout. Using a standard box or are you rebuilding with stronger gears?
 

Build Update 15.2.2016

Progress on the project has been slow with other work priorities. I had some time to over the last few days to work on the shifter and driveshaft solution

Shifter
Alot of the guys in the US have been using the Toyota MR-S shifter box and cables with the innovative shift linkage adaptor. I found it quite hard to locate these MR-S shifter box and cables and we had a few issue with invetory delay with innovative, so one of my customer who is also building a mid rear engine set-up, suggested the mini copper shifter box.
 
Surely enough, he lend me his Mini cooper Shifter box and ive measure up the length needed for custom shifter cables to be made. I left this job to Conwire in Milperra and should have this back this week
 
Driveshaft
In terms of driveshaft, Driveshaft shop makes there level 5.9 range but its priced at $1899US. It will be a little over $3000 AUD to get it over here which is a quite substantial to the build cost. For the present time, i decided to measure the driveshaft length i need by using the Honda inner and Toyota MR2 outer

 
Our new corner weight machine arrived earlier in the week. I put the MR2 on the scale with the K-swap and it came in at 1035kg. This is without axle, exhaust system and fluids. In N/A form, i expect it to be sub 1100kg in street trim.



Being the Australian Distributor of GAB suspension, we will be fitting the GAB SS range to this project MR2 as well


I should have both the shifter and drive shaft solution in 2 weeks.


 

Progress has been slow, well i havent touched the car for 3months. Workshop is very busy with customers car so this project has taken a back seat for the time being
 
However, since i posted last time, i just settle for Driveshaft shop Level 5.9 axle kit. Thats all fitted to the car now and should be good for 1000hp 
 
I got a few things to mount before it go to our trusted fabricator for top mount manifold, dump and cooler pipes. I plan on getting this project on the road in 2 months for some 1/2mile action and Nulon Round 4 (Cootamundra Airport) 

Ive also got my fibreglass bonnet, engine cover and rear boot to be fitted as well. That should balance out with the extra weight from the turbo set-up. I can confidently say it will be under 1100kgs (without driver) all said and done. 

The goal will be high 9's pass on this OEM motor before i build a new forged motor for it. Our customers project "RHONDA" recently went [link=mailto:10.7@132mph]10.7@132mph[/link] on 330kw on a K20A turbo. Quite impressive on street drag radials

Thanks Benny.  Should be great.  I will be very interested in the finished project.  And appreciate the quick reply.