It's not letting me delete this quote for some reason, but yes, you are correct. Even though aluminum is not as thermally conductive as copper, the mechanical properties allow you to build a radiator that is more efficient through the use of larger tubes.
I'm in Kansas City, but I frequently travel to Michigan for work (Holland area). It would be easy to divert to Detroit.
Belton-Raymore near Kansas City. How is it shipping stuff like that from Canada?