Didn't Ron make brackets to use Camaro rotors, etc.? Or maybe that was just the front. IMO, a high quality rotor/pad combo and makin sure everything else is up to par (fluid, flex lines - SS) should provide decent performance. Unless you're going large all around (like mega brakes up front and upgrade MC, etc.), then going larger in the rear won't do a whole lot...Adjustable Prop. Valve works good, also.