Thanks, CBGBs.
The reason I ask is that one of the carbs on this bike is missing the float bowl. I need to find a new float bowl, and if the carbs don't match, as the very different parts numbers suggest, I may decide to buy a whole new carb instead of wasting time looking for a new float bowl.
The carbs may match after all. There is an ebay seller offering carbs from a cb450, and I emailed to ask him for the part numbers. His are very similar to mine, and right and left are very different-looking numbers.
His: Right: A LL# 723B Left HL 14H
Mine: Right KA 723A Left JI 14H
Does the manual offer any insight?