Wanted: Radiator for a 56 Olds Super 88

[56TuTone88]

I went to flush the radiator and put fresh Antifreeze in it, and discovered that it is totally clogged at the bottom with rust, stop leak, and god knows what else. I took it to the radiator shop to see if it could be re-cored, and was told that it would cost nearly 500 bucks. I am sure I can just buy one for less than that. I suppose that if the Radiator is that bad, the heater core is shot as well, so I might as well replace that while I'm at it.

Does anyone have any idea where I might find those two items? does anyone have a radiator, and/or a heater core that they would part with that is in decent shape?

I have done Google searches, and all of the radiator places I found only go as far back as 65.

Thanks,

Jim.