Copper vs. Aluminum

Hey fellas.

So I've been doing some work with my engineering consultancy lately involving the use of copper conductors, and have had to look at both electrical and thermal conductivity of aluminum vs. Copper. I knew for a long time that copper was more efficient than aluminum as a heat exchanger but I had no idea how big the difference was.

Just looking at thermal conductivity, aluminum has only about 60% of the ability that copper does for a given size.

So that got me to wondering, I bet many of the common overheating issues we hotrodders have is due to using aluminum as a heat exchanger.

Question I have is, are there any aftermarket radiator companies producing copper radiators?
https://www.restorationradiators.com/