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

Thanks guys, I'm trying to work out a deal with a guy close by. He has a complete one but has aftermarket axles that are small bolt pattern. Who knows why anyone would've done that. So I'll have to buy axles and a steeper gear, so I'll still have quite a bit in it, but cheaper than a strange 60 or something like that. What do the 8 1/4's come in that are the same width? Anyone know any cheap disc brake setup for the 8 3/4?