I bought a used steel bumper, with scratched fog light bezels.I don't have the factory bumper, but it doesn't look difficult at all. The bezels are #8 below. It looks as though you'd have to remove the end caps (#9) in the illustration, and you may need rivets. Were the originals damaged?
Yes... you'd have to replace the rivets... they're one-time use only. Your local Harbor Freight would have them in assorted sizes, and you'd need a rivet gun. They're inexpensive and worth having; you may find yourself using it often for other possible modifications.If I drill them out, are they rendered useless? And I’ll have to buy new rivers?