It's drastic, but here is what I did on my '67 (only the top bar was dented from the belts snapping back). First, have a roll of aluminum tape on hand. Fill the dents with Metal To Metal, smooth the surface, then lay on a strip of the tape and trim with a razor blade. The color of the tape is not an exact match to the anodized color, but it is so close that unless you 'study' the grill it's virtually invisible. Did this a dozen years ago or better on the GTA and it's still holding up. Beats the devil out of springing for the cost of new ones.