Wanted: 3.08 or higher rear

Need help finding a ring and pinion and posi from 3.08 to 3.36. I know this is not the correct forum but please redirect it. Will take either the gears, posi or both.
If you know of a vendor that could supply something how about a link? THX!
Possibly a complete rear end, even a 'Chevy, especially the '65-'67's. This is to fit a '66 Skylark GS.

 

Where are you. I have one in Jersey. 3.08 Posi from a 66 GS

 

in central n.y. I would like to buy that from you. would be perfect. thanks Joe.

 

bingo!!!!!!!

 

PM Sent Joe.