Hey hazardous,

I believe it was you that had a post about putting an S-10 under a 3600. Did you read my reply? I've been doing some reading on an S-10/SBC swap site, lot's of good info.

www.v8s10.org/forum/

The 83-90 rear will hold up as long as you don't go big rubber and put your foot through the floor from a standstill. But you're right, the 91 and newer has better ratios, and it's stronger. I'll probably end up changing mine at a later date. It would be simple to just change out the carrier, but from what I understand the axle splines are different.