Radiator Recommendations

Mopar Virgin said
1968 ... but, curious why Copper? Everything I read indicates Aluminum is a better cooling choice. I'm not married to OEM or tradition, as this is a RestoMod, just looking for best functional and visual solution

Because early A bodies 63 and 64 use 19 inch and 65 and 66 use 22 inch 67 and up have even wider radiators. Not all A bodies are the same.