65 Barracuda Brakes... Help

Because big bolt A body 8 3/4 are super rare. The later year A bodies had big bolt axles but in an 8 1/4. If you have access to a complete big bolt A body 8 3/4 why would you even start the thread?lol EDIT: What rear axle do you currently have? That is I guess where to start....

well between the time I started the thread and now (a day and a half later) I found a guy selling a 8 3/4 rear end. I wasn't planning on switching out this many parts, but due to the fact that all the brake kits were only for 8 3/4, I figured I'd see if I could find one... That said, it is pricey (over the budget I wanted to spend), but it's super nice, never been used and well built, and would probably be a good long term upgrade considering I eventually would like to drop a bigger motor in. I just need to find out if it will for sure fit. Sounds like it will, but the seller didn't seem to know a whole lot about the early cudas, but mentioned I'd probably need bigger u-bolts, and possibly shorten my driveshaft. Any info would be greatly appreciated...

quoted from seller "8 3/4 A-body rear end, billet axles, hardened 3.73 richmond gear set, sure grip posi-unit, cop brakes w/drums. 489 case w/snubber" Lot invested, never installed. Apparently was going to drop it in his 74 dart, but now is selling the car.

P.S. Mine's a 4 speed factory manual, forgot to mention that...