I spoke with Tom Campbell and Terry Newell on different occasions and both were very helpful. Who did you talk with? My radiator also turned out well. I was just curious what your problem was? Sorry post took so long. I didnt think I was gonna get a reply to my post earlier. :)
I found that Active radiator does a lot more than just aluminum radiators. They also do brass and steel. They were very helpful with my custom work requirements.