Yes, those are the brackets I'm talking about. I had spoken with Dan some months back and he didn't want to sell the brackets. Seems like he made only one set and of heavier gage. I looked at his photos and it appears a couple of angle cuts were not replicated. A few weeks ago I came across an original pair and since I need two sets I decided to have these made. Quicker and probably will end up costing the same for another used pair. I will weld in square nuts as original. With in the klast year I found two Unison Seats with just about all the original hardware. The last set is lacking some fasteners.
If there was any kind of demand I would have a few more sets made up but I don't know if it's worth it.