I have a 12in stock gtr prop That has already been rebuilt its wearing down pretty good again. I just modded my motor with mikuni carb heads cam pistons rods and a higher rev limiter im going 31-32 mph at 4050rpm on a 18/54 gtr boat. My question is do I rebuild my prop again for around $150 or do I get a new prop and can I go with a more aggressive pitch if so what pitch do I go with? Being its summer time I hardly ever touch mud I would like to get a little more speed

I have a brand new Gtr prop that was build to a 12X11. It was for one of my customers and he could turn like he wanted.