mechanical (rigid) fan blade

You guys are losing a lot of horsepower, by changing fans you can feel the difference probably 20-25 hp.

I have 400 more where those came from. On the street I'll give those up anytime, for superior cooling. If I kill my engine with an overheat, I will lose all 425 of them.
FWIW, on the street, I could not tell the difference between my current set-up, and a teeny tiny 6 blade full time aluminum flex-fan. But my engine sure could. You want my fan? Nearly new,very low mileage, a little dusty; just pay shipping and handling.