I have a rear end question

[Dcramer]

I have a 63 Nova. I am replacing the rearend in it. I have two Options. 1) the stock style rearend from a 65 Nova. It has a drop out third member. 2) is the S-10 rearend. standard ten bolt with a removable rear cover, and bigger brakes. My question is this. I plan on replacing the gears in either one with a 4:11 set. Now since both rears are ten bolt gm, will they both take the same gearset, or does the older set with the drop out section use a different style ring and pinion? Thanks Duane

[duffy]

Try this place, they should know....Randy's Ring and Pinion
You'll probably need to know some numbers off your differentials...

[ACMSG]

My gear supplier tells me they are not the same. The bearings and shims are different as well as some other small things. We have used a number of S-10 units and were very happy with them.