Based on the info from Royv I contacted Bill Carberry at Classic Radiator (once you hit the link above you navigate their website to Classic Radiator). He quoted a re-core of the radiator for my 53, retaining the OEM numbers at $595 with a 1 year warranty. I checked with him on recore for the heaters, the fresh air heater is $200-$225, and the re-circulating heater is $395. Pressure test and repair of the fresh air is $30 and up. I will be able to drive mine down to him if I go that way, so no shipping.

Mike

My old truck's still running good, my ticker's ticking like they say it should, I got supper in the oven, a good woman's loving, and even my bad days aint that bad...Yeah, I'm a lucky man!
1953 Chevy 3100 Shortbed

1965 C-30 Panel Truck
1963 C-20 Long/Fleet Pick-up California Black Plate