"A" Body 67 Barracuda rear end problem

There is no brass in a 8 3/4 rear, any pictures? 3.23 gears are nice street gears that give up little in acceleration and keep RPM down cruising on the highway. I'd weld up the housing but clean it up to get any other bad parts out that may damage your new gear set. Get new inner seals also. Small pattern is original, someone has modified the rear and front brakes if they are 5 x 4.5 BC. You should be able to find a 3.23 pumpkin and just swap it for the 3.91 pumpkin.