RARE experimental air cleaner 62' for 383 or 413 dual inline 4 barrels

I asked the seller to post a picture of the profile of the air cleaner. I can't tell if it's fully enclosed or an open element type. Looking at the filter element itself, it looks quite tall and since the baseplate is basically flat, it would probably have hood clearance issues in some of the passenger cars of the era. I like you are very curious about this air cleaner. I know Fram made a lot of experimental air cleaners for Chrysler over the years and it's not that unusual for them to have left the factory. This one does not look to be some quick mockup either.