I've purchased two: one from Classic Industries [recently] and the other from Laysons [ years and years ago].There were disc brakes available on later A bodies with the 5x4in bolt pattern. My 72 Demon I owned had them. You really need to upgrade to the larger bolt pattern and with that comes all sorts of wheel options then. I know it can be done, someone on here has probably done just that. The quarter panels were known to rust out. I had a 63 wagon with the same issue and we formed new panels, but I'm sure a good steel fab shop could make much better ones then we had. Enjoy your wagon.