Quote
1) 86 and back starion (and flat side 87s) diffs fit the front 7.5 truck carriers but require shims.
2) 88/89 starion diffs fit the 8 truck carriers.
3) 87 wide body diffs fit the 8 truck carrier but accept the 7.5 axles.
*If any of the above is incorrect, correct me before I start buying parts. Thanks

So mag00, 1) is what your describing?

And for me the simplest and cheapest thing would be to swap in a v6 8inch and do 3)


That sounds right... The early starion small diff needs a ring gear spacer. The V6 from diff is a much better solution. You will need to mod the 4 cly cross member to take the V6 diff. The rear mount needs to be dropped down. The V6 crossmember wont fit the 4 cyl frame.

87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...