Ok, so I'm wanting to finally get rid of my 2.76, 7 1/4" rear in my '71 Dart. It currently has a 300 hp(ish) 318, 904 transmission, 3000 stall, and small bolt pattern 9 inch brakes all around. What I would like to do is upgrade my rear with 3.54 gears and keep my sbp. That limits my choices...