No radiator in front, only this one in the back. I like the idea of the RV pump. What size hoses go to it? I'm wondering if I really need 1.5 or so hoses to the back or if something like 1 inch will flow enough.

A few years ago there was a T bucket at Turkey Run that had a big blown engine in it, and he had two radiators like you describe. The second one was up against the tailgate, which was cut out and screen put over the holes for cosmetics.

Don