I need to replace the air horn on my '68 Camaro's Rochester 2GV carb. Are there identification numbers (date-codes, etc.) stamped on this part or on any part of the carb? Also, what is the title of a good manual on rebuilding Rochester 2GV carbs?

There is a Rochester book that covers all their carbs. It's black and has a break down of all the carbs. I have a 2GV in the garage still on a Buick intake, it's shot of course.

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68 RS, Ash Gold,pwr windows,Hounds tooth