I have a 1976 Audi 100 Coupe S Auto and have fitted a 32/36 Webber carb to it. It now goes like a rocket but uses more fuel. The carb has a tag on it "72HF KB
B OC20"
if this means anything to you. I would be interested if anyone else has used this carb on an older Audi and if so what jetting was in it.