My present package is a 21 Pulsare(1996) with an 02 300X motor.(hydraulic jack plate, steering etc.) Great performance package, however, the family complains about the noise and the smoke of the motor especially when compared to the latest offerings. Just back from the Miami boat show and was impressed with the Yamaha 300 HPDI and Evinrude 250 HO. Will the boat handle the additional weight of these motors? I do not want to introduce performance problems like porpoising etc.