Been looking into those gears and was considering 4.30's, but they require an 8.8" rear end. I'm certain that's not the stock mustang size so I was looking at, http://www.mustangtuning.com/rearendrebuild.html

Is that the only product I'd need to get my car ready for those kinds of gears?

Thanks.

 

All 99+ GT`s have a 8.8 rear end. The bearing kit, fluid, and gears are all you need. Use royal purple.

 

all 87-06s have them i know of, probably earlier but im not sure

6ers have 7.5s

 

4.30's? why?

 

acceleration