That's basically a hi-po hot rod motor. Rev limiter is 7500 rpm, I think. Very strong and fast on a light hull. Running in the upper rpm range will require the pistons to be top pinned. Ring life is considerably shorter than a normal motor. I feel sure that the motor will need a rebuild between 100 and 200 hours if ran hard. On the other hand, lower r's (6000 or less) will make it last a lot longer. On heavy hulls, the 2.5 will be weak on holeshot, need cubic inches for the heavier boats. Will also require 93 octane fuel. They were known to be good motors, just be aware it is a near full race factory hot rod.