Took out the 30' Kachina today with the upgraded 525 Whipple 3.3L EFI. We ran a very stable 78.4 on GPS with quite a bit of fuel and two of us in the boat, now pulling a 30 lab (from a 24) and just touching the rev limiter. The boat will easily run 80+ with a tad less fuel pressure and a 32 lab. Im sure of it. But the 30 is perfect for the family, friends, lots of fuel, and HOT weather. Its a fun boat to drive.