repower Crestliner 1750 fishhawk-- rated for 115HP in 1996-- Should I take the weight of a 115 in 1996 for the max " weight" for a repower ie 4 stroke--- also noticed when checking optic and etec they are not light and within 60 lbs of a 4 stroke----??? am I locked into " old tech" with a 20 " tramson |