Right now I'm looking at buying a 01 Mustang GT, 5SP. The guy that has it has done some performace parts to it like Steeda Intake, Steeda Adjustable Upper control, arms, Eaton posi with 373 gears. My question is are 373 gears good for this car? Also what are 373 gears good for, where are the advantages of it over stock? Are they more for 1/4 mile or a little longer of a race?