Re: 460 mustang swap, 8.8" or 9"
Both "Rear's" have real strength. What sort of driving do you intent? Will you be drag racing this car?
If the car is mainly for street use and your using an automatic transmission the 8.8 should do the job, but if you intent to drag race or your using a manual transmission (and want to "bang'm") I wouls suggest the 9in.
I don't know of any 9in. that's a direct bolt in, but having one narrowed and set up for the proper spring perch's would diffently be worth the expense.
When in doubt :DON'T
Valley Station, Kentucky
Dream EXPression Racing