Finding Stampings

Correct Prop--help please?

I just bought an old Thundercraft 15' trihull with a 1979 Johnson 75 hp Stinger engine Boat will be used for general running and pulling small kids on tubes Has a pair of hydrofoils on the cavitation plate now Existing prop is pretty much junk I cannot find diam x pitch stampings on the existing prop What is the best aluminum 3 blade for this application? Existing prop diameter is 13 inch. Any recommendations?

great answers given already but don't think I saw this being said...

1. Buy a new prop and install it

2. Get the old one reconditioned and keep it as a spare in case you lose a blade of the new one

Trust me...you'll be glad you did.

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