WTB Honda CB350 Brass Carb Inlet

Does anyone know where I can purchase the brass fuel inlet that goes on the carb? One of my stock carb's is missing it. This is a 1970 Honda CB350.

I have a mostly complete parts carb you can have for $25 shipped. It's got everything but the choke butterfly I think. Diaphragm has a razor slit in it. Everything else looks good. I ran it through the sonic cleaner.

I have the same issue except both carbs are missing the brass fuel inlet. Anyone successfully used brass tubing or ??? All I can find on google is a Keihin "L-shaped" fitting for Keihin Harley carbs. Anyone know if these fit the 3D carb on a CB350 ??? Thanks.