'68 barracuda bumpers question

Didn’t know there was a market for these things. Took mine off & tossed them. I was worried about a little bumper impact transmitting to the fenders, as mentioned above. I assume the point of them is to hold the bumper aligned. If they are just thin aluminum paired to a stiff bumper, what good would they do? Other than visual I guess. I just put all the bolts back to plug the holes.