Hey everyone, thanks to everyone thats helped me thus far. Next questions are: Are all 3.7 mercruisers interchangeable? i hve number B958196 (I think, numbers are blurred) and found an engine with number A560281, according to the add on ebay. Says its from a 1986 boat and it ran when winterized 1 1/2 years ago. will they be a direct swap? was that thee first year of these engines and did they have bugs that were fixed by the time mine came around? Thanks!
