72 CH rear Bumper lip

[Caparco]

Hello men

 Curious if anybody has any idea and how the lip is attached to the body
On the 72 just above the rear bumper and just below the tail lights I thought that this was rubber but when I ordered the Part, shockingly it was metal and it has several holes, John the whole length of it for clips I assume. Also is this a year specific add-on? Did the other years follow suit or they have different things I'm sure the 70 and 71 were different as they always are
Thanks for the information and tips ahead of time and
Photos would be great
Marcus

[71vert340]

On my 72 Challenger, it's attached with screws and it looks like some seam sealer may have been slopped on there in a couple of places. Hard to tell on the seam sealer. Maybe some slopped over from the taillight panel. I removed the screws and it came right off, a few years ago.

 Terry W.