8 1/4 or 8 3/4?

the 8 1/4 is big bolt. not sure what your car is. the 8 3/4 is small bolt unless you already have big bolt axles for it..

money wise you'll be ahead buying the 8 1/4 throwing it in and selling the 8 3/4. that being said if it were me i'd spend the money on the 8 3/4. i just like them better. the 8 1/4 should hold up fine for you and your useage.