I am looking to repower a 1988 starcraft SD200 Fisherman(20') pontoon. It is power with an 1987 50 hp evinrude. I'm looking an e-tec. The problem I'm looking at is the weight of the outboard. The old outboard weights about 181 lbs. The new outboard(E-Tec 75 hp) I'm looking at weights around...