I have had 2 boats and the best bet it to let a pro do it, not woth sinking in the middle of the lake when you are dealing with a high powered boat and a fiberglass hull it will shak rattle loose if not done right.
check your coils wires look them over real good check the connections and tighten em up.look into the spark wires too screw off the ends look and see if they are rusty inside and cut off a little and screw them back on.try these ideas
I a put a box back on mine cause I go thru too much mud riding, I used to just take 2 filters and outwears but it too much of a hassle.I am installing Rocket pipes currently can't wait to hear what it sounds like with DG silencers