Gib - I have become convinced that the 4 bbl bracket and kickdown parts are made from unobtainium. Ive looked high and low, off and on for years.
I was in the same boat, and started the car running using the bouchillon kickdown set up on mine, and a later model 4bbl throttle bracket. The cable going to the trans around the doghouse gets extremely tight in there, and the keeper bracket for the cable on the trans itself was awful tight. I had to cut and reweld it to make it work, I also had to flip the ball over on the trans lever and weld that, my clearances were damned tight in there. After a little while I decided that was for the birds. It worked, but I did not think it was sustainable for the long haul.
If you have the complete oem 66 and older 2 bbl set up you can adapt and make it work.
Heres what I did - I made my own throttle bracket from heavy guage mild steel. All you need is a vice, a hammer, adjustable wrench, drills, some files, and a moderate dose of determination and about 2 hours. What you are going to do is make a mirror image of the 2 bbl bracket. It works fine on my 66 4 bbl oem manifold with a holley 600 and the mopar adapter for the carb. I cut the slot for the keeper - drilled a hole and pressed in the stud for the keeper as well. I'd be willing to bet mine looks darn close to an oe piece.
For the kickdown, all you need to do is lengthen the carb rod and put a mild offset Z in the middle somewhere so it then lines up with the carb button ball, and the bell crank. In my case I happened to have had an odd piece of kickdown from another mopar (I believe it was a mid rod from an older 3 piece kickdown set up) that had the right size threaded end on it for the carb button end link. I bent it slightly - and then cut it and resectioned it to the "right" length, and welded it together. It now links the carb to the 2 bbl bell crank perfectly.
I can post a pic Friday if you want a look see.
