tranny kick down linkage...

You will need the original throttle bracket cause it has the pivot point for the linkages to hook up. You will also need the bell crank that bolts to the transmission and the linkage that runs from it to the trans kickdown lever. And you need the linkage that goes from the pivot point on the throttle bracket to the carb. Another potential problem I see is the carb. itself. It doesn't look like a Mopar carb. Looks like a GM linkage carb. There's no way to mount the Mopar specific trans. kickdown linkage stud on it from what I see. If it was me I'd buy a cable kit from Lokar or Bouchillion and install it. Probably won't cost much more, if any, than original parts and a much cleaner install. Plus the cable mounts to the bottom of the carb unlike the stock linkage that mounts to the top of the carb throttle lever. That'd solve all the problems I believe. Just another thought for ya.

BTW: I know it may look neater to wire tie the plug wires together but they can magnetically crossfire like that causing your engine to missfire.