Thanks! That was fast! What are the heat issues? Is the stock radiator too small? Why would a stock 455 run hotter than a 350 or 400?. Is there a best year for 455? It's not a SD. I will run numbers when I do the check out, but the guy said it came from a 73 or 74 Can Am, Grand Am, or Grand Prix. I can't remember. I know it was not from a Firebird. The car is not a rust pig and welding is not a problem for me. Judging from the door and fender gaps there is no signs of twisting. However there is some twenty + year old traction bars underneath, so it was kid owned at some point in it's life. He guy says it the brakes, engine, trans and front end have all been gone through and he is looking for 8K plus for the car. Is this reasonalble. PS: he says the engine was professionally rebuilt to stock specs.