hey guys, my boat is a 21' tahiti with a 460 and berkeley 12jc a pump. all stock I'm pretty sure. she runs great but naturally I'd like her to be a little faster, especially since she's long and sleek and everyone expects her to be a white knuckled thrill ride. aside from putting in a place diverter, I was considering a little souping up this winter; nothing major, just a valve job, new cam, intake, carb, ignition. but I was reading on the berkeley web site and they said you can spend alot of money and not go any faster if you don't modify your pump. what do you all think? will such engine mods make any difference? and berkeley shows my pump pushing considerable more water at 4800 rpm, yet my engine hits 4200 and thats that. any way to get her to rev up?