Yup, that radiator looks like one of the high dollar custom made ones. Good score.
I saw this track T on Ebay, and it had some similarities to your build. He used a 2.3 engine, 4 speed, and rear from a Ranger. Said it gets 30 mpg. That is very attractive on it's own. :) The only thing I didn't like about his was that he also used the ranger IFS suspension setup. Looked too bulky.
Thought you might enjoy seeing some pictures because of being somewhat the same as yours.
Don