340 Six Pack In Fla

I just move my 1970 Dart 340 Six Pack to South Florida. I had some issues with cooling when it was in Ohio now in traffic it is running about 220. I would like it cooler. I am using a stuff radiator and Mopar Performance fan drive. What is the best, affordable after market radiator/cooling module?
I'm in Miami. I barely take my car out in the summer. Too damn hot without AC. Mine would climb up to 220 often also. Recently I upgraded to a high volume water pump. That combined with my 3core Champion rad and an electric fan from a Chevy HHR and now I can keep it around 190 ocassionally hitting 200.