i have 1976 18ft bass boat with a 135hp chrysler outboard,just found out that there is no compression in three cylinders and probley scored cylinder walls,have got a 1972 125hp evienrude v4 that has not been run for a frew years.if motor is good what kind of problems am i looking at in changing motors.it would be comming off a ski boat complete with controls. what about steering, ski boat has cable and bass boat has a solid cable and rod.