Are these Bumper Guards original?

[special-K]

Hold your horses. First of all, there were no original bumper guards because they were never an option. The GM accessory program that offered aftermarket trinkets offered the guards, Vent Shades, etc. There were guards offered from other sources and from what I have seen, those have differences in the metal itself... shape and general design. The way to tell the GM accessory guards is the sides above the bumper are wider, the others are "cut out" more.

As far as the ribbed pads go. I have personally bought bumper guards from the Chevrolet Parts counter that came out of the GM box that had those ribbed pads. In fact, the last purchase I made on those was around 1989 when I bought two pair. I used the one pair on my '70 CST Custom Camper/30 work truck and the other pair laid up in my stash. In '07 I went to sell them and when I opened the box I saw they had ribs. So you can't go by the ribs. Yours look to be GM accessories.