From what I have researched, I believe 1971 dual snorkel air cleaner. This was on a 68, which I know is not correct. Both doors/flaps are intact and operational. As you can see, someone got happy with a hole saw for more air flow (ugh). Seems to be a wide range of prices on these, so I will start at $150 plus shipping from zip 57004, but very open to reasonable offers. Would also be interested in some type of trade for a 68-69 unsilenced air cleaner unit.