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Hey folks, I see a lot of outboard prop questions, but I am looking at buying an 89 Gulfstream with a Mercruiser 5.7 Alpha 1 Gen 2 sterndrive. I believe the gear ratio is 1.47. Any ideas on what size prop should be on this, the tack says 4600 at 22 knots and wot is 5100 at 33. Everything I...