Custom/Hybrid prop sizing ported yamaha 718, kawi 140mm pump, 300sx hull

[Brian_216]

Im building a 300sx with a kawasaki 750 pump swap, ported yamaha 718 from jetmaniac, ADA head, B pipe etc.

Im up in the air about a prop. I have no clue whats going to work or where to start. I figured I would post over here and see what suggestions I get.

 

[Waternut]

For what kind of riding? I'm also curious why you want to use a yamaha engine but a kawi pump?