I have a few known 1967 basic part number 18471, chamber assy - heater air plenum. Specifically part# C7ZZ‑18471‑A. It is shown in the first picture on the left hand side.
To the right of it is a part I picked up in a larger batch at a swap meet, along with other 1968 stuff.
As you can see, the other part is:
1. Wider and taller
2. There are ears that stick out where the air is discharged
Other than that it is similar in material, weight, and construction.
Was there a change in 68 to this style, or is this from a Fairlane, Torino, or something else?
The 1975 version does not even list any 67-68 component available, it must have been dropped from service.
Thanks in advance.