I took these bumper brackets on off a cuda front RUBBER bumper that I had and they had 2962448-9 stamped on the outer brackets.

In checking the 70-71 parts books I see that for the outer brackets 2962284-5 are for standard chrome bumpers and 2962446-7 are for the rubber bumpers.

So the question what exactly are the 2962448-9 part number brackets that I have for? Visually they look like and match up with cuda bumper brackets so its pretty obvious that is what are they for, so what is the application? Chrome Bumpers? Rubber Bumpers?

Thanks