1. Don't know, I put mine on myself.
2. Thats gonna be a trial and error there.....the gear ratio on the 175 is 2.50:1 which is close to the 2.59:1 on my 140, but with the extra ponies, it will need a different prop.
Just as a starting place, I am running a 14" diameter x 21 pitch aluminum prop.
Hopefully your dealer will have some experience with similar rigs and can get close.....if not, just make sure they agree to swap props with you til you get it right.
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Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke.
1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.
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