R50/5 (1970-1973), R60/5 (1970-1973), R60/6 (1973-1976), R60/7 (1976-1978), R65 (1978-1985), R65/85 (1985-1987), R65LS (1982-1985), R75/5 (1970-1973), R75/6 (1973-1976), R75/7 (1976-1977), R80/7 (1978-1980), R80G/S (1980-1986), R80ST (1982-1984), R80RT (1