I have a 1991 Overnighter with the factory hardtop. Last year I repowered to an 2011 ETEC 150. Great fit for this boat. Plenty of power. Boat cruises well in the low 30s mph and can hit 40 WOT. I also run a Yamaha T9.9 kicker for trolling. Boat sits nice and level in the water and the scuppers are not underwater. Plenty of power for fishing and cruising Puget Sound. I run the 100 grade ETEC oil only. I am very pleased. Nothing against 4 strokes, but I think for an older boat like this, they are a bit heavy. I also got a great deal on the motor. Free ss prop, and controls, compliments of BRP as a part of their repower special. I also got a five year extended warranty at no additional cost.