Lonestar
NAXJA Forum User
- Location
- west bountiful utah
I just bought a rear ford 9" for my xj. How do I tell if it is the big bearing or the small bearing 9"? It has 31 spline axle shafts, does this mean it is the big bearing unit because I know they made a 28 and 31 spline 9". Also can I change it to the big bearing if I need to without switching housings?