I know how everyone is about details so, the boat is a 19' miller jet, '' A '' impeller . the old engine was a 30 over BBC 427 , -50.cc dome , winters 074 heads . comp cams xm288h hyd flat cam. old school weiand rect port with sideways 750's. it would turn a solid 5100 rpm. this combo ran flawless for 7+ seasons as a river/ski boat. i was going to build the exact same engine again with maybe a similar roller cam. now I'm thinking maybe i should sell the 074's and use a set of Brodix RR 270cc or equivalent, but keep everything else about the same . lets here some opinions please....