Average price of a 8 3/4 small bolt pattern?

Why not install a B-body 8 3/4? It is only a 1/2 inch overall longer. that means 1/4 inch each side. The difference can be made up with custom wheels . If you want fat tires in an A-body you have to move the leaf springs in to to the frame rails, and move the spring pirches on the rear end. Still way cheeper and ezer than having axles made.