Any/all of these?
756s — 216 engine aftermarket 1937~1952
787s — 216 engine aftermarket 1937~1952
788s — 235 engine aftermarket 1950~1952
789s — 235 engine aftermarket 1950~1952
890s — 235 engine aftermarket manual choke (number assigned, no production)
891s — 235 engine aftermarket auto choke (number assigned, no production)
964s — 216 engine aftermarket manual choke 1937~1952
965s — 216 engine aftermarket auto choke 1937~1952
966s — 235 engine aftermarket manual choke 1950~1952
967s — 235 engine aftermarket auto choke 1950~1952
2008s — 216 engine aftermarket 1937~1952
2046s — 206 engine aftermarket 1932~1936
2100s — 235 engine aftermarket manual choke 1953~1956
2101s — 235 engine aftermarket auto choke 1953~1956
2104s — 261 engine aftermarket (number assigned, no production)
3055s — aftermarket (number assigned, no production)
3211s — 235 engine aftermarket 1957~1962

What mounting bolt-to-bolt distance for each model (or, for what years)?
Does that change in 1953?