2bbl 68 383 single round snorkel....
View attachment 303851
This style/type of air cleaner top is correct for the '65-'67 383s, 2bbl and 4bbl. Note the flare at the end of the snorkel! Compared to how the dual snorkel in post #14 has the "inserted" flares in the end of the snorkels, which I believe is for '68 dual snorkels. On this style of air cleaner, it's the base plate which defines if it's a 2bbl AND which 4bbl it fits ('67 used the small hole AFB, whereas the '67 Holley 4160s used the large hole, as did the '68 4bbls. Same part number filter element for all, including the 1968 Road Runner open element air cleaner.
Non-CAP cars in '67 did not have the closed breather cap, as pictured. The non-CAP cars had the non-hose snorkel and open breather cap (which usually put a small oil drop stain on the valve cover, over time. Not sure about the '68s, though.
For model year 1969, the rectangular snorkels replaced the round/oval snorkels, single or dual.
For an incognito open element, stock appearing snorkel air cleaner, put the base from the Road Runner air cleaner (must have a Holley 4160 or large hole AFB or AVS carb) under the snorkel top. Leaves about 2" of open space around the bottom edge of the filter top. Just don't see the edge of the filter base plate around the bottom of the air cleaner top . . . IF anybody knows to look there.
CBODY67