Disc brakes

I've done it on every A body I've had. Well worth the time, money, and effort. I only use OEM stuff except for brake pads, then it is Hawk racing pads, just my preference. 73 up if you have 4.5 BC in the back or KH if you have 4.0 BC in the back. Both are great. Upgrade your suspension while you are at it. Torsion bars, front sway bar, HD rear springs and good shocks.