1974 jet drive

just curious (i know i am curious alot) but i saw in a wellcraft thing i cant remember wear right now but i might think of it later, but it reccommended for the v-20 steplift with a max hp rating of 235 hp it said twim 115s were best, but i think that would be to much weight for a v-20 becuase a 115 weight about 350 and you put two of them on there that would weigh about 700 pounds, but a 225 ways about 450 and there is only one engine. what is a better power plant twin or single. *???

fishbonejr