My '65 C60 has a 500cid Cadillac V8-larger than anything GM put in there from the factory-and even with the four core radiator that I had made for it back in the '90s, it was barely adequate in cooling. So a few years back when I refreshed the top end of the engine, I found an aluminum radiator on eBay, new, $350 with shipping. It fits a bunch of different International Harvester tractors, and it's over four inches thick. My bus now holds about 9 gallons of coolant, and I can idle it for an hour before it even gets over 190 degrees. That's with no cooling fan whatsoever. Due to the other work I'm doing on it, and the old unsafe wheels I'm busy deprecating, I haven't had it more than around the neighborhood with the new cooling system. But it was still cheaper than having the original one rebuilt for $700. I did have to make some metal brackets, but it wasn't too difficult and they even look pretty good.
As has also been said above, measure the dimensions of yours.
This is like mine, except mine had five rows of cores. The width was perfect and even with the tall cap, I could still close my hood with room to spare.
Last edited by Tronman; 04/02/20247:48 AM. Reason: Clarification.