200R4 all the way if you don't wanna cut the tunnel. That said if you don't mind cutting the tunnel, look at the 6L90 tranny. 6 Speed auto with great ratios so you can rear 410 no problem.
X2. I run 4.10 gears and 26.7" tires. 2800 rpm at 80 mph. I can actually drive on the highway now. I put almost 8000 miles on my car last year because I could finally drive it anywhere. I recommend a 200R4 to everyone.
