Donzi 22 ZX non step, prop change
 

Running a 1997 22 ZX (no stepped hull) with a 454 Magnum and stainless marine manifolds. Boat currently has an untouched 23P mirage plus (early style so no PVS) and runs 67 mph on GPS just touching the limiter. At near max trim it will blow out.

Considering a 25P mirage (non-plus) prop to drop a few RPM off the top end. I know the plus props have more cup so any idea what kind of RPM difference I'd see? Any guess on what will be the better prop?

Thanks

RPM may drop 500-550.
For speed the 25M+ after baseline specs are used to create the proper Lab recipe.

Brett