What camshaft
 

Just in the process of refreshing a stock 1999 Magnum 454 MPI in a Donzi Ragazza 25. What camshaft would you guys recommend if the following modifications have been made from stock. 1. Gil Marine manifolds and risers 2. Valve springs and lifters to suit performance camshaft. Still want the boat to be easily manouverable by my wife.
Do you know what kind of hp increase from 385hp I could expect.