Radiator Cross Referencing

[LuckyRabbit4]

I have a 66 c10 straight 6 stepside. Old farm truck turned parts runner for a body shop now it's my new toy.

The truck has been over heating. I don't know much about these older vehicles but I KNEW the radiator was an issue right away. It's too small. I looked up the model year and all that good stuff for the dimensions. The current radiator is about 7" too skinny, 1 1/4" too tall, and a whole inch too thin. It's a mess.

I was wondering if there is a more modern car I can look for in a junk yard that might have a similar radiator that may fit? Even if it's only long enough to get the funds up to replace the whole cooling system. Why replace one thing at a time when I need to do it all eventually anyway?

Any help would be great.