50 H.P. YEAR 1966 MOTOR 50 H.P. YEAR 1968 MOTOR 50 H.P. YEAR 1970 MOTOR 50 H.P. YEAR 1971 MOTOR 50 H.P. YEAR 1973 MOTOR 50 H.P. YEAR 1981 MOTOR 50 H.P. YEAR 1982 MOTOR 50 H.P. YEAR 1983 MOTOR 50 H.P. YEAR 1985 MOTOR 50 H.P. YEAR 1987 MOTOR