M610 | - The M610 sportsprototype (1964-66) |
M620 | - The M620 sportsprototype (1967) |
M630 | - The M630 sportsprototype (1967-69) |
M640 | - The M640 sportsprototype (1969) |
M650 | - The M650 sportsprototype (1969-71) |
M660 | - The M660 sportsprototype (1970-72) |
M670 | - The M670 sportsprototype (1972-74) |
M680 | - The M680 sportsprototype (1974-) |