Hi! My 51 3600 is going back together now and I am starting to think about the radiator. I have changed to a 283 with a 700r4 transmission. I would like to use a radiator that has a transmission cooler built into it. Is there a production radiator from some other vehicle that will work? I know I can use the measurements and look for an aluminum aftermarket radiator but they sell for $300 to $500 dollars. I am hoping a radiator for a production car or truck would be more cost effective. What do you think?