well here u have it i have a 19ft wreidt spoiler w/455 (461) olds like the boat i've had the boat since late 80's early 90's it has a berk jc w/a impeller now just in the process of rebuilding the pump and now putting a A2 impeller what kind of speed should get out of this boat got maybe 500 hp w/msd ing 800 holley c heads filled head on crossovers ss valves about 12 1/2 : 1 comp. 10 qt pan w/ restricers torker intake thanks for any input