Found this listing of three 10 bolt A-Body rears. Two are 3:55 ratio and one is a 4:33 Prices seem fair... https://knoxville.craigslist.org/pts/d/knoxville-pontiac-10-bolt-rear-axles/7046948896.html
Looks like 8.2". Might make some good xtra units if you have the room to store them. OK, What the hell are johnny joints?
I think it's a slang term for spherical joints that go in place ofvthe upper ear bushing. Allows for more and smoother articulation in the suspension travel with very little deflection or movement. Think a hime joint style look pressed in bushing
