One of these days I'm going to get a TIG so I can get filthy rich welding a couple tabs to the side of a universal dirt track radiator and sell them as a conversion radiator for twice what they are worth.
Seriously, get a $200 Chevy universal 22x19 aluminum radiator from Summit or Jeg's and make your own mounts with scrap steel. It's very simple. Here is my radiator with Taurus fan. I have about $300 in my entire cooling system including radiator hoses and wiring for the fan.
I wheel it like I stole it and it has never gotten over 210 with this setup.