Hi Perry, thank you for your post, as well as the rest of the group
I found a "one in a million" Set of (NOS) Forged & Cast Classic Roadster Bumperettes here a couple years ago, 50 miles from my house on Craigslist. The gentleman knew they went to a Cobra, but whenever anybody called on them, the spacing was 3 1/2" bolt to bolt, so they were never sold. I just happen to call, and said I'll take them today (Thanksgiving) the guy thought I was nuts to drive down on Thanksgiving to pick up the piece's he had for years & years, till I told him how rare they were for my car. He only wanted $100 for them, I was so happy to find them, I gave him $200
Karma my friend. Cheers Tom.