I know of a 32 Hustler wiht warmed over 502's that clocked in at 88mph. Same boat with 700's here in NJ is just under 100mph.
The 32' Hustler is not stepped and is actualy a 28 foot magnum stretched to 32'. It rides much nicer than my 30 ft. Scarab.
My boat, of course older with TRS' and 550's is at 76 mph.