Just went through all the cooling problems with my Hemi Dart clone. Aluminum radiator, 165 thermostat, duel electric fans from the radiator builder claiming they would cool a 1000 HP engine. The car would climb to 230 degrees quickly. After going through everything to solve the cooling problems it turned out to be the fans were not pulling enough air. Put on a pair of 13 inch SPAL electric fans, mounted to a home made aluminum shroud. Now the car never goes over 190 degrees.Go on SPAL's website and pick the CFM rating you are looking for. The duel 13 inch low profile ones I bought pull 3560 total CFM and work great. I will not use any other brand after my experience. Search the internet for best pricing if your go with SPAL fans. Hope this information helps you.