Here's the NOS knobs I have... I have 4 knobs that are like yours and from my research they are for all A bodies from 1967-1971, which I would think would be correct for 1967 Barracuda. They are chrome and have a sleeve in them. You press it on and the sleeve helps it stay on.
The 3 at the back are all different but the center one matches the Classic Industries top knob you posted. The back three knobs all have a set screw.
PM me if interested.
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