Most modern oem Impellers are rated to 450 hp, not sure about my competition but ours are good up to 500 (although i have knowledge of folks running aluminum much higher hp I don't condone it) I still would go with a AA in your application , for the lift factor and hole shot gained by a bigger impeller in a bigger boat . regarding loaders lots of boats benifit from them ,heavier boats IMO dont always (my Miller runs 80 with a rock grate& AAA imp) , the single best way to add or subtrcat "hardware" to your jet is the scientific way , this means drilling and tapping the jet (suction hsg ) in two places minimum to derive readings to actually observe and know whats taking place in the jet underway not unlike your engine guages . This is cheap and easy and gives you at minimum ,some kind of reference to make decisions by. To simply bolt on a loader or shoe etc and "call it good" is akin to throwing darts at a dart board ,I wont deny that one can get lucky . I suppose inlieu of that one could borrow an arm load of loaders and go to the lake trying different and experimenting with ones , this is arduous and time consuming and as loaders for example have to be checked/trimmed/tuned to the bottom of the boat ,just doesnt make sense. heres the set up were useing on our Glastron , although these are marshall liquid filled , a pair of inexpensive oil pressure guages can be employed, lines and fittings are hardware store stuff! If were to make 1 change to an "E" pump boat carte blanche it would be to the "shoe" area which we know is deficiant up front ! knowledge is power ! Tom
note the small lines on the right of the suction near the hull
