prop question
 

i have a 42 cigarette revolution with triple bravo ones &640 hp's that i put in after purchasing the boat. I believe it originally had about triple 500's?(all i knwo is that it had triple hawks and the boat is a 1990 and the owner said it went about 75). The boat came with three props but two props are 25 pitch 4 blades and one(center engine) is a 26 four blade. is it normal to ahve 2 different pitches for a triple engine application & does anyone have any idea wut company & size &or prop labbing would be good if im looking to get the highest possible max speed?