I have been trying to find a supplier that has a heater core for my 57 deluxe heater for months. I just found THIS place in CA. A bit much, but the only one I have found so far. I know a couple others were looking too so I posted it if you are looking.

1957 Chevrolet 1/2-ton Stepside LB in the Gallery
My Photobucket shots

The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself." - John Stuart Mill (1806 - 1873)