The HP loss from a fixed blade fan is made up at least in making more power controlling engine temperature.
I’ve said it many times on here, and why guys still argue the fact, that cooler engine temps make more power, every time.
Engine oils are so much better than they were in the 80’s and 90’s that it’s comical. So engine wear is a non issue IF you fix the tune up for cooler engine temps.
I wouldn’t worry about the few HP you give up with a fixed blade fan an get the engine temp down to 180 or less and make the power up and then some.
