I am using a Keisler (no longer made) 5 speed:
1- 3.37
2- 1.99
3- 1.34
4- 1.00
5- 0.67

Rear is a 3.08

My car has the stock 430hp LS3 and is only street driven. With a 26.1" rear tire size I am doing 55 at around 1500 rpm in 5th. 1750 is 65 and perfect for long cruises...

The wide ratio trans works great on the street in an overpowered light car with a broad torque curve like the LS3.

with 430 horses the thing is a ground missile - you'll have a blast!

I also have a "build Thread" on the other site...