Hi all, my friend with a Z4M has recently upgraded his headers and is now able to out pull my 2007 G35 Sedan with full intake and exhaust.. Im looking to get my car quicker by upgrading the drivetrain. So far I've heard that the best bet is a one piece lightweight aluminum driveshaft.. However, I can't find one that specifically says it's for the sedan. Are the driveshafts from the coupe and sedan the same? It seems like it would be different since the sedan's body is overall longer than the coupe.. Anybody know of the best driveshaft option for the g35/g37 sedans? I was also looking at getting a 3.9 final drive. I've heard that this improves acceleration/butt dyno tremendously. How much does it typically cost to have one of these put in? Finally I was thinking about doing a lightweight under drive pully and maybe a full lightweight pully setup.

Does anyone have any other suggestions for mods that I can do to get my car a bit quicker, and put my friends BMW in its place? I was considering doing the Z1 motorsports ported upper/lower intake, does anyone know if this is worth the money? I haven't tuned the car yet and would like to wait until I make a decision on the intake manifold.

 

Well you can always get a light weight pulley. But thanx to me, I had a carbon fiber driveshaft made for the 2nd generation. I love it so much. It revs up quicker. Another thing you can look into is a transgo kit. All this will help out.