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 50 H.P. YEAR 1989 MOTOR 50 H.P. YEAR 1991 MOTOR 50 H.P. YEAR 1995 MOTOR