Thread drift warning...
Colin mentions installing the MT three bladed prop, an excellent prop, I too have installed one on an O-360. It replaced a two blade Hartzell. Colin, do be alert for a difference in the gliding characteristics with the added drag of the third broad blade, if you went two blade to three blade. I find that to achieve the same gliding rate of descent I had with the two blade Hartzell, I have to swiftly move the propeller control of the MT to full coarse, and the glide is markedly improved. I was practicing this the other day to remind myself.
Otherwise, sorry, in Canada, I have zero knowledge of the F22....