Thanks Bill. All of the 440 carbs I have that are 69/70 have the black rubber bowl vent. Some of the later replacements 440, 71 440 and all my 340 carbs have the vent with the hose. This may be the factory bowl on this carb. It’s an early carb. I forgot the date, but’s its earlier than my oem carb for my A12. It’s has some changes on it. The main bodies have all been milled flat and the metering block has been changed. It does have the 225 plates with the holes drilled in them like we talked about.