Im thinking about going to an 11" disc setup on the rear of my 72, so I can run a 15" wheel at the drag strip. I have a 13" 4 piston setup back there now. I honestly doubt I will ever push the car hard enough to need the big brakes out back. I need suggestions on a conversion that is reliable , but affordable to go down in rear brake size. OR someone just want to trade from something small to something bigger? No rush on this. Im actually going under the knife tomorrow for a back surgery and will be down for a while. I should be out of the hospital by around Friday and be able to check in on here soon after. Thanks!