The only bolt on and go units that will fit are the 1969-70 85hp as the crank splines are different. A unit from 1969 -71 85/100/115hp will work if you install your driveshaft....
what do you mean "install your driveshaft" do i need a different one than the one I will have from my exsisting 85hp. I'm gonna do all the work by myself, just want to make sure I have all my ducks in a row
