40flash

The car is now running and is my daily driver. with the low profile 17s on the car, I'm finding that the 3.54 gears are too low. The car is 500 lbs lighter than a Z and there is a bunch of torque. The end result is that 1st gear is too low. Barely get started and have to shift. Much of the time unless I'm starting on an up hill incline I start in 2nd gear, shift to 4th and them 6th. Also, at cruising speeds I'm turning a lot more RPM than I'd like. 3,000 RPM at just under 80 MPH. Much of the time using it as a 3 spd. I'm looking into alternative to raise the final ratio.
The 2 possibilities I'm looking at are the 350Z automatic diff that came with 3.35 gears, (I'd have to do the fab work to make it fit into the car since The ring & pinnion won't fit into my Q45 housing.
The 2nd option is the r200 diff from a 2005 to 2008 pathfinder which came with a 3.13 ratio.
I believe I can install my S15 helical diff in either of these options.