MerCruiser 1351-3635A1 Rochester Carburetor GM 2-barrel 160hp 6cyl 4.1L 250CID 75hp Basically this would have been

Basically this would have been found on all Alpha One MC1 (Pre Alpha)

Manufacturer Part Number: 992104

This would have been used in conjunction with MerCruiser propellers (Produced after 1983) that have a metal insert on the back of the prop covering the non-removable rubber hub regardless of engine application for any drive that was produced after 1970 (Pre-Alpha / R / MR / Gen II)

I used my best guess on the other ones as the history gets tricky

MerCruiser 1351-3635A1 Rochester Carburetor GM 2-barrel 160hp 6cyl 4.1L 250CID 75hp Basically this would have beenItem Details Freshwater Used Part GM Rochester 2 Barrel 2GC carburetor assembly MerCruiser Part Number 1351 3635A1 for GM 160hp 6cyl 250CID applications (Serial number 2492036 & Up) Which is probably 1968 1969 with the cast iron manifold. Related Possibly Equivalent Numbers 7028188 (Rochester Bowl Number) 1351 3635A2 (Superseded number) The earlier 1338 2291 carburetor would have looked a bit different than this one. Visually it looks in good shape,