The time has come to upgrade. Its been a great motor but due to her age and parts availablity I would like to upgrade. The boat is an old hull that I would like to keep, a 19 ft fiberglass. I was thinking a 4.3l VP. I am wondering how much work it would be to mount in the hull. The question is would the motor mounts with a 4.3l match up with the existing mounts for the AQ171?