Need A-body 8 3/4 (8.75) rear

I have an 8.25 now. I was going to put in 3.55 sure grip that my local Proven Force dealer could get. They would cost me $550. If you can find an 8.25, they are usually fairly cheap. Then drop in your own gear set and away you go. Still close to your original hoped for price. I just bought a Dana 60 and would sell you my 8.25 but I promised it to my brother so he could keep his Cuda a rolling chassis.