hi i am form michigan looking to build a mini airboat going to be used for icefishing i have snowmobile engines that were my raceing engines they are yamahas 1 is a 440 with 55 hp at 7200rpm the other is a 115 hp 600 at 9000 rpm were can i get a good redrive what size and what prop would be best i have been looking at the rd2 hull for my build any help would be great thanks jim
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