There are several places that mfg. new modern type radiators that will bolt into the 42-52 Ford pickup trucks. Walker Radiator works Inc. comes to mind. You can buy them with the in and out in any position with auto trans coolers and ac condenser built in. The only bad
part is the price. They can range anywhere from $600-800 bucks. There are other mfg but most of the places that sell radiators for hot rods come from Walker. Like some of these other guys you might have to retrofit something if your on a budget. This might not be the info your looking for, you might try a search on this forum and see what some others have done.