I called Lokar today as well as Holley, and neither has what I need, which is an accelerator rod bracket that also supports the kick down rod to the transmission (accelerator bracket and kick down in one, like the stock bracket on early mustangs).
I also checked with Carl's Ford Parts (who I was referred to by Holley), and Carl said they don't reproduce the accelerator kit for small block tri power like the original kits by Ford, said most set ups are manual, so that's probably why. I can't believe all the tri power set ups sold by Carl's, Mustang Unlimited, and Cobranda (ones I know selling 289 tri power) are all going to manual transmissions, but none of these suppliers sell an automatic adapter kit either.
I couldn't even find a parts supplier selling a repro automatic kick down bracket to use to modify for what I need (don't want to mess up my original if I don't have too). None on eBay either, guess it's hard to find.