Most all of these manufacturers make a perfect or exact or whatever they call it kit for our trucks. Finding a ready to install kit shouldn't be the deciding factor on which brand to get.
I just placed my Vintage air order and ended up with sort of a universal kit, really a collection of parts suited to what I need, with very same evaporator as used in the "SureFit" kit for 47-55. On advice of the dealer who has installed many of them in the AD trucks he said considering the numerous changes to my truck I'll be ahead to make/modify my own brackets and put it just where I want it. I knew I'd have to plumb everything myself anyhow so a universal line kit instead of all the pre made lines.
Grigg