hmmmmm come to think of it i've never seen them anywhere for sale......mine were gone also.... i cut me a peice of thick aluminum about 2" by 1 1/2" drilled a few holes in it,held it inside the door and scewed the factory screws in, while holding the mirror in place, not easy but it worked well,mirrors are good and tight, you can't see any of my rigging (on that part of the car anyways) lol...... an extra pair of hands would have made it a simple job....... good luck in your search.... if you can't find them maybe this info may help.... my holes for the inserts was way too big so i couldn't have used the inserts anyways.... jace