Tincup had a custom radiator made by Northern (solid oem type manufacturer) for his build way back. My take is they took his measurements and made a standard production piece from it, which is now sold by a variety of vendors. Northern part # 205199, universal parts gives it their own part # CR3239-1. Either, Northern or Champion, appear to have the same fan mounts. Northern has a shroud kit with a 16" spal fan or dual 10" fans that is supposed to work with the CR3239-1.
