Saw this on craigslist. I don't need them but for $7 each maybe I'll pick them up for the hell of it. Unless someone else here needs them.
http://newyork.craigslist.org/lgi/pts/2267223281.html
If someone can confirm whether these are correct for a 1970 duster front bumper I would be interested. Mine had them, still has them on the back, you can see the marks on the front bumper where they used to be.