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Hope you found what you were looking for but Glenn at impros here in CA would be my starting point. If you are replacing talk to him about what you like to do with your boat and he'll customize your set up, bought 4 new solas impellers, custom pitched them and welded an extra impeller on each side in for my yamaha 242x with lots of extra ballast. Yes each side will have an extra smaller impeller for the purpose of surfing and stopping cavitation. It's not cheap but boating is not a cheap hobby. Luckily Glenn is an hour from me!!