ive heard of this being done alot but just had a couple questions b4 i got started...

is there any diffence in how the borg-warner rearends .vs the 10bolts mount that would create a problem swaping in a 4th gen unit into a 3rd gen with the borg-warner?

also, what all differences are there possible in 4th gen units i find? 3.23 or 3.42 ratios? any differences between rearends from v6's or v8's?