I have a A-body 8.25 suregrip rear end with 4.56's and also comes with an extra set of either 4.10 or 4.30 gears (I'd have to check to see what they are, they are in the box from Richmond), complete with 11x2 lbp drum brakes - $350
I also have a 73 lbp disc brake set up complete with 73 spool...