I own a 2005 G35. Recently I had a G37 loaner car. The car was really fast and could easily spin all thru first with VDC off. The G37 would also do 2 gear changes going thru an intersection. The 7AT is geared really aggressively, even more so than the 6MT. The VQ35 and the VQ37 have similar torque output so I wondered why my car didn't have that off the line snap like the G37. The G37 has much much more gear torque (gear ratio x final drive ratio). Here is a chart I made showing gear ratios for all G35s and G37s, 5AT, 6MT, and 7AT. I also included in there calculations for people doing differential swaps. I have a 3.3 and was thinking about doing the 3.5 swap, but after making this chart, I will do the 3.69 swap. Swapping in the 3.69 will put the gear torque for each gear closer to 07-08(sedan) 5AT gears. The 7AT has too much gear torque and too many gears in my opinion.