Formula 233 Registry

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Not new to boats, but new to twin I/O's, like the '69 233 I'm currently repowering. I'm sticking with stock 165hp inline 6 engines and alpha drives. This lookes to be a heavy boat. Does anyone have recommendations on the prop diameter and pitch? I'm looking to keep RPM in the mid-4000's at WOT. Thanks!

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My best guess. Start with 19x14.5. Oh yea, get loaners....

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