Badger - a 3 litre Merc 200 might get you into the mid 40's on a 222CCP, but I don't think you are going to get there with a 2.4 or 2.5 litre... ~40 seems about top for a 200 HP 2.4/2.5. Most 3 litre 200s are really putting out a good bit more that 200. With the right prop, I think a 3 litre 200 will outrun a 2.5 litre 225 - there's just no subsitute for cubic inches! (or cubic centimeters)... See ya on the water!