I bougght what is suppose to be a 1950's johnson 5 or 5.5 hp outboard. It is in cosiderable condition but I need a impeller the one in it is dry rotted and a couple of the tabs are broke off. the part # 377178 shown in your catolog looks to be what i am looking for. The motor has no recoil, throtle lever is on front of engine cover, it has one fuel mixture knob on top with numbers 1-6 and a shift lever is also on top it has 1 speed forward, If there is anyone who can give me some fast imformation on this motor please let me know as soon as possible. THANKS