i can get a good deal on a set of 3.73 Richmonds from a fourth gen. how can i swap these into my car? i also want to swap in a posi unit of some sort. alas, i have shallow pockets. where can i find a good, cheap posi unit that will work with my fourth gen gears and fit my third gen rear. also, how can i find out what size rear end i have in my car? thanks

 

you should have a 7.5 10 bolt, the gears will work, but watch what series carrier thay came off of

 

For the posi unit get a SLP take off unit for $99.Count the bolts on your diff. cover if you have ten bolts holding it on you should be good to go.

Also do a search.