what can i do my 71 seems to always be running hot? and i think the radiator is leaking into my passenger floor board? whats going on? you can e-mail me info brandon4003@yahoo.com thank you for your help!!

Lots of things could cause it to run hot, some of them having more to do with the engine than the cooling systems. Leaking into the passenger side floor is most likely a leaking heater core.