Woody, you have recently taken and posted photos of the heater core for our Deluxe heaters. I've measured mine also to compare with your photos. I've tried several large online auto parts stores to locate cores to fit and they don't offer them. One place, Auto Parts Train, had an intensive offering of cores and I wonder now if I could find a core with the same demensions and use that one, regardless of it's intended application. My heater housing has some play in it enough that even a core that comes close to the demensions should fit and work. My question is do I measure the demensions of the fin portion or the entire unit including the "box" on the end? I'm sure I'm missing some reason why it wouldn't work, but I'm beginning to believe there isn't any source for a direct replacement and I'm trying now to think out of the box and am thinking I should just try to find a core with the same demensions and that should work. Obviously the two nipples would have to be in the same location, or close to it. I'm also noticing that the prices of later model cores are much cheaper than the old stuff. If new works then why not go with it. I still can't believe such a simple part is causing me so much grief!!
Your thoughts guys?
Spot