Thanks guys. After talking with some guys over at the jalopy journal's H.A.M.B. forum and reviewing their solutions, I think I'm going to try the Flex-a -lite mojave heater. Some of the guys are running them in roadsters and full size sedans and from what I've read, they get hot enough that they have to turn them down. It should be more than enough heat for the '46's tiny cab- I hope so, as I like my heat!