I agree with you guys, I think the long run alone will drop some heat and I can get the biggest radiator made back there. I might actually have the opposite problem, running too cool. That is a problem I will take though.

Glad to see you guys agree that laying it down won't cause the radiator to only partially fill up. My opinion is that the pressure will insure it being filled at all times. I like the vent idea Ken, to bleed off air. The radiator will be sort of as high as the top of the engine, so that is where I could bleed it off.

Don