i have a 2000 yamaha vmax 3.1 and want to get some blistering speeds out of this engine. i have heard that hydrotech offers 3 phase kits for performance possibilities. anybody used these and what kind of results have you gotten? i am running in the low 70's[gps] and i know i can get in the 80's with a little help. my boat is a 2000 xpress x21 dc and my engine is already equipped with a 13 pt. low water pick up (nosecone) from bob's marine out of florida. (25pitch hypertech prop)