I have a round snorkel one that fits a 2bbl Carter. It sat a wee bit high under the hood of my Barracuda, though -- it left a circle mark in the hood pad, so I don't know about clearance on the Duster. Replaced it with an original Super Six square snorkel that has more drop.
the hood on the duster probably sits a little higher maybe. yes the sq snorkel type like on the super six or any 70's 2 bbl breather is really what I need. most people change over to a 4 bbl carb and toss the 2 bll stuff!!!!!
what it take $ to get it to Tx 77371???? just wondering...thanks