4 piston brake question

I did want to know about A-bodies because I couldn't find a KH on the 4 piston brakes I got from a friend who went Willwood on his 71 Dart. The calipers need a rebuild and I found rebuilt ones on Rockauto from Raybestos, Nastra, and Cardone and only Cardone mentions KH. I know they are rebuilders, but wanted to make sure if I bought from them that I was getting KH calipers.