Yeah, I have a 2002 Mustang GT i have just about all the bolton's on my car,I have 3.73 gears in it right now.I just bought FoxLake Stage 2 Ported Heads and Comp Cam's (XE270AH)Hot Street Cam, 234/[email protected]"/.550 Lift. and also bought a Diablosport Predator Programmer ,with the programmer im going to extend the Rev. Limiter and other things,but my Question is do i need to go with bigger gears like 4.10 or 4.30 gears. Im going to to need something to get me through the RPM's and something more to get me off the line better. How bad would the 4.30 gears hurt me like gas mileage and such I don't know just let me know what you think. Thanks a lot