8 3/4 axle spline

Sure, the springs are in stock location and the housing is a custom built unit made from a c-Body piece, 1/4" wider flange-to-flange than the a-body spec. It's got 15" cop wheels that fit just right with the tires listed in my sig. Maybe room to go 275 on the rear, but it doesn't need that much meat with the slightly over stock power it's making:

http://stuff.is-a-geek.net/PhotoAlbum/Cars/Pics/duster_36.jpg