the kick down linkage is an adjustable rod that is attached to the bellcrank.
it runs to the back of the engine where it snaps onto the linkage going to the transmission.
i may have a PDF of the log ram from a FSM on the other computer. i'll have to look. it shows all the adjustment procedures and the order in which to do them.
i think this info is also on one of the "forward look" sites, but i can't recall which one.