I am looking at a 2000 17 foot javlin and a 18 foot javelin the 17 foot has a johnson 115 on it and the 18 footer has the 150 faststrike johnson on it . I think thry are both 2000 model boats ( the mighe be 1999 model boats. the boats are very clean. but i am concerned about the johnson engines can any one give me some info on both engines ( both have carberaters on them )

any help would be great