Early a kickdown set up ?
I can only answer your question with a question... On a 67 Commando setup, was the bellcrank assembly bolted to the back end of the head same as 66 ? I ask because I have all gathered but one little clip for my 67 but I think it may be 66 stuff. The 67 2 brl has the bellcrank on the intake so thats my clue. Also those linkage clips on this 4 brl. linkage are heavier made than those currently on the 67 2 brl.
Kickdown linkage is definately the most confusing mess ma mopar ever made.
Good luck