Anybody see this odd A/C dash vent system before?

Seen this A/C lower dash system in a 73-76 Duster in a salvage yard...it looks like it’s made for this car, it has the contours for the dash and steering column, controls are also in it. It’s not in the best of shape but thought about grabbing it since I’ve never seen another one before...even has a little Chrysler emblem on it, could be a dealer install or factory install? It’s heavy on the end hanging down, must have an the parts or blower in there along with the controls. On the left side there is a vent on the end but it’s broken off but there yet. I seen a picture of a 71-74 B-Body with one like this and it fit the same way but I didn’t know it was a factory one. Any thoughts? Thanks

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