Yes, the XL is a factory K/H disc brake car. I already have the new K/H calipers and all lines and hoses. I just found a set of Centric rotors for $135 shipped - pair. So Other then the calipers, everything else is fairly reasonably priced. I also have the rebuild kits for the new calipers should they ever blow out. (boots and seals)I also have my original set that I will refurbish sometime for spares.Would think for $450 for just the rotors there would be a cheaper solution out there. Did your car have the K&H brakes or are you adding them? Parts are not cheap for that system and the car can easily accept spindles and disc's from 70's donor Fords that have much less expensive components. Also from what I have heard (haven't tried yet myself, my '67 LTD came with these brakes) it can be hard to fit an aftermarket rim over the calipers unless you are willing to run a spacer.