i have a 1977 1150 inline 6 mercury outboard it has a fresh rebiuld on the internals and has never ran right and i have been trouble shooting it for quite a while and finally got it running great. the first time i took it out and opened up the throttle a bit it took off but lost power and died this repeated several times so back on the trailer it went and i took it home and found a rip in the gas pump diaphram and replaced that then it would start sometimes and sometimes not so the coil and switchbox tested good and now i need a distributor. Thanks for hanging in there i am to my question these distributors are hard to find and expensive to rebuild i would like to know what years of other 115's would swap with mine and i believe a four cylinder distributor would work if the four window plate was replaced with the six window as the adds say the replacement fit both and come with both windows but they do not say what years.Sorry for being so long but would appreciate any and all help/advice