by Charlie Tolman » Tue Oct 09, 2018 1:17 am
A Victoria British catalog lists HS2 carburetor numbers of AUD-73 and AUD-136 for 1098 engines, 1962-'66.
HS2 carburetors, AUD-266, -328, -404, and -549 are listed for 1275 engines, 1966-'74.
Over the applicable years, there are several differences in many of the replacement part numbers, too many to list here.
The two generic drawings in the catalogue for 1098 and 1275 applications, appear to be the same for the carbs listed above.
I do not know if one of these carburetors is considered to be the best for your application.
Charlie T.