I'm more of a pushrod guy, but I'm helping a buddy with his car. He has a '04 GT that he put a built 32V motor into. It also has an Eaton set-up off an 03-04 Cobra. Lately he's been smelling coolant, but can't seem to find a leak. Today I was looking at it and noticed that there was no water in the heat exchanger tank. After filling it, we fired it up, and after about a minute it started running rough and blowing white smoke out of the tailpipes. I'm guessing that the heat exchanger is leaking coolant into the lower manifold? Has this ever happened to anyone? I think we're gonna pull the blower off tonight and see how it looks.