Actually, Jay's FE Power unit is a copy of one made decades previous, that I believe is a copy of one made decades prior to that...
I have a copy of some original material about the first ones buried here somewhere...
Can't remember the guy's name, but I think the company was called PSE (Pro Stock Engineering) or similar?
Should I dig it out and share it?
I think know roughly which box itis filed in...
Testing my way-back memory here.
I'd enjoy having one myself, but...
Even the better manifold options to make the adapter desirable are fairly rare/obsolete at this point I guess.