This is the 3 piece kickdown setup for a 4 bbl setup. The bell crank, bracket, and lower 2 linkage pieces are the same as the 2bbl setup, the difference is in the upper lever that goes from the bell crank to the carb. It has a bend rise to reach the taller 4 bbl carb. This is standard stuff from 67 on, except for the upper rod, which is a 340 piece. Incidentally, the early linkage with the paddle bracket from 66 is known to lock up because it doesn’t have the slider end at the carb. The sdjustment for the early stuff is in the up and down linkage piece, the rest work like a hard line linkage and can lock up making a full throttle situation. That’s basically why they went to the 3 piece design. Included is a picture of the 3 piece installed on my 66 Commando equipped 273 Signet.I'm all ears. Do you happen to have any pics, or part numbers that I could use to track down these parts?