carb number?

[C20 LET]

as above, i need a new vacuum advancer, however, they are asking for the carb number in order to give me the right 1. does anyone know where about on the carb the number is, as i cant seem to find it.

it is a 1.2 manual choke! 91 j reg.

thanx

[Welsh Dan]

Pierburg 1B or 1B1, take the air box off and you'll see it written on one of the top faces of the carb.

[C20 LET]

wicked, cheers for that.