I’m just guessing, but I bet those are a early AAD arm design that Speedlogix labeled with their name. They stole AADs harness bar, so why not these. That adjustment setup is actually pretty nifty as long as it stays tight and doesn’t move. I think making sure those bolts don’t loosen and you end up with a self adjusting control arm will be important. I would suggest besides checking those bolts frequently, that you paint a line on the arms in that adjustment area, so if they change position you will be able to see it. If they loosen up they could saw those serrations flat and ruin the arms. The current AADs can’t do that because they use tabs instead. Good job btw on doing all that on your own. 👍🏼