Just put a deposit on a 1984 larson delta 25' with the nice size cabin sleeps 4 bathroom, shower, camper top the whole nine yards. the boat is in absolute mint conditon and was in fresh water its whole life. came with trailer. problem is the motor knocks so i got it for 3 grand. for some reason the boat has a 305 chevy motor. i dont know how many horses however the boat cruises at 17 mph and tops out at 25ish. not fast enough for me. I want to replace the motor with a 350/350 horse. i want to make sure that this swap will be worth my time. will this boat ever hit 40 and cruise at 30mph with a 350/350?? also its a omc outrive which i am told over and over again to stay away from. I might be wrong but i thought that an omc drive would be a ford motor but this one i think has a chevy. the firing order and the GM stamp on the intake manifold would tell me chevy. I never heard of a chevy motor and an omc drive.. could that be original? is 3 grand a good deal for an 84 larson 25' delta w/trailer?? i am new to boating . here is a link with the pic..http://www.bargainnews.com/viewad.cfm?Show_Notepad=Yes&bnAd_ID=6364981&TheDealer=