So, I have a GSR tranny on my C1 (appropriate, of course). I think it's pretty stupid to have my RPMs at 4000 @ 70 mph when I have boost and it does not do wonders for my gas mileage. Additionally, at the track I ALMOST have to shift to 5th upon reaching the 1/4 mark. I've been speaking to a guy not too far from me that could put an LS 4th and 5th gear in there for me.

Thoughts?