New to this forum, I've had my 08 GT/cs vert for 3 weeks, The plan is to add 4:10, JLT and tune from MPH in Ga. The reason I'm responding my last car was an 03 Mach with 312/329 at the wheels, I had 4:30 gears and with traction issues running MT dr's, I could run 8.1 to 8.3 with 1.8X 60', this...