I actually did a search on ebay years back for an aftermarket radiator that was shaped to fit my 48 ford, but larger to work with my engine, and transmission upgrades. There was a company that sold aluminum radiators for lots of different makes and year on Ebay then, had great reviews and was an actual radiator company/buisness somewhere in the Michigan/ mid west try searching ebay, might be helpfull. Very reasonable cost if I remember correctly!