I have been trying to search the site but my computer doesnt want to work with me lol..what i'm needing to know is will a tilt and trim unit from a 1979 150 Johnson GT fit a 1977 70 hp Johnson ?? they look close but i want to be sure (the Gt is a parts motor)..my father-in law needs the tilt and trim for his 70 (he has a bad back) thanks for any help 