Running a champion 3 row radiator with shroud and 2 12" spal fans. Worked great for my setup at the time with the Blueprint Engines 347 stroker and afr heads. Motor made around 420-430 hp. Ran a 180 thermostat and 190 Mr. Cool temp switch for one fan. Which one fan worked great but the second I had wired for key on/off power incase I needed more cooling in stopped traffic. In the future i may add a turbo timer to shut the fan off after a period of running. For the time I drove the car never had an issue.
I will say do not follow champion's instructions for fan wiring. They state to run both fans off one relay and amp breaker first drive i did with it wired that way fried the breaker and relay. Even after some time on the phone with them, sent pictures and what not they still were firm on the wiring. But after I changed it as stated above zero issues. Now on to a bigger badder motor and S/C setup.