Id love to do a back to back of this vs stock in the rmit windtunnel. Im planning of getting mine in there some time in the coming year

Since you have already gone through the trouble of cutting all those metal out, have you thought about re-angling the radiator\fans as well as putting a flat tray underneath?
 

I wish I could experiment a bit on mine as well..

Tonight I removed the old stock thermo fans on the AW11 and fitted a single 12" thermo fan from Supercheap Auto.
I decided to do this for a couple of reasons:
1. The second thermo fan has only ever worked when I had airconditioning in the car, which it no longer has and the second fan no longer works, so it's just dead weight.
2. The primary fan that does work is on one side and doesn't blow the air directly into the next bonnet vent (sorts blows to the side of it.)
3. The stock setup has a steel sheet metal shroud which has a fair bit of weight in it.

So I pulled the radiator out and gave it a quick flush and a scrub while it was out, then moved onto installing the new thermo fan.
The old fans compared to the new one.

Saving around 50mm of thickness.

New fan ziptied on... Slightly more dodgy then the normal mounting kits... (Zipties lasted for 8 years on my old S13...)

And the view through the bonnet scoop.

 
I'll be back to working on the bonnet scoop this weekend, I've booked the workshop at work to access the mig welder and I'll weld up the firewall cut out properly, then seal it with chassis sealer. After that it's onto making the rest of the cowling to finish the vent off and move onto body filling the gaps and edges to make it look better.

nice work Aaron. the photos don't do it justice, but I'm sure the sanding and filler make a world of difference to the quality of the finish. good to see you didn't't shroud the fan, it would only work against the airflow then the car is moving. be interested to see if there is any difference to the handling on track as well.

yeah, i'd really be keen to hear about that. I remember when robYob took his 1.5 to phillip island, he said it got very very light over 200, probably made twice as bad due to the 3s in the bum.
 
I'd love to do the samething, but alas i live in the nanna state, so it's not really an option on a daily driven car.
 
I might have skipped through a bit, are you going to make an air guide between the bar and radiator??

awesome. although it may be fine, I think it would draw enough attention that I would get picked on for other things ie. turbo, motec, no emissions equipment etc. I think I'll save it for the plausible point in time it becomes more of a track car and not a daily.

good luck with finishing it up, it will he interesting to see the impact on lap times etc when complete!

Your pumping out the work on that car. You will certainly have plenty of track time to enjoy it.