Yes Henri. The 76 is the important number and you have the correct (right hand side for a single carb job). The other numbers will only relate to the way the carb is set up (Slide, jets etc) Also which side the float chamber is attatched and it's angle. All these can be adjusted acordingly to give you the correct set up for your Speedtwin. Ron
Hi Henri,
As Rik mentioned, in the "76" carb, the pilot air drillings in the mixing chamber body and is breathing from there.
In all other aspects it is the same as "276", only in the "276" all the air is filtered, entering from the intake side.