Rear Brake Backing Plates for 8 3/4 Diff

You are correct, they should just bolt right onto your housing. Where I got confused was the width of the shoes that will fit. There's that pivot point with a "head" on it. You can't put the 2.5" shoes on it because it's only tall enough to fit 2" shoes. I'll have to get more measurements when I get home.

Actually, I think you are replying to Big.J.007, he's got the larger brakes. Mine are 10"x2".