I have a Champion 26" radiator and got the champion electric fans. They don't seem to be pulling enough air(dual 12" fans). I want to go with the contour fans people have been using Dorman 620-104. I have a Ron Francis AR-99 controller already. Can I use this controller with the Dorman fans? Should I wire them up separately like I had the champion fans? They would only have one speed then. It also seems possible to use the controller I have then up together but I don't know.

Thanks for your help and advice
Sanman68