Looking for some assistance with radiator challenges

Thank you very much for the responses. Looks like I will be ordering a Champion radiator, if I can find one to order. Where has everyone gone to purchase one on line? Summit and Jegs do not carry them and when I went to the manufactures web page, they give a list of dealers but no one to order from.... Does ChallengerGary have a different web page to order from?

And yes after going back out to the car and looking at the transmission cooler lines, they do appear to be steel. And it looks like we should be able to repair existing, figures crossed.

Make it a great day!
HAMMER