The Stalker was originally specified with aluminum drum rear brakes. I think the brakes were performing adequately, but I was never quite sure. The biggest problem was that I could never get the parking brake feature effectively adjusted. Mark Scott came up with a way to use Alero/Grand Am backing plates along with the Alero/Grand Am rear rotors and calipers to have the rear discs and an effective parking brake.
Banjo bolts are Earl’s 997517ERL 10×1.0mm Banjo bolts