WANTED: 8.75 sure grip 3.55 or 3.23

Looking for a 3:55 ratio, sure grip center section for my 8 3/4 rear end. This is going in a '72 Road runner with Auto transmission.Looking for good, solid, swap-in and drive condition in the Delaware area. I would like to be able to drive to pick it up and I'm looking for a decent deal. Let me know what you've got.

Will also accept 3.23.