Help with bouchillon kick down cable

Well, there is an initial adjustment that is considered 'correct' in the FSM and is a starting point. In reality you will probably need to make some fine adjustments. A 1/8" adjustment of that bracket can make a difference (like if the the 1-2 shift is late or it doesn't want to shift into 3rd). Valve body mods, if any, also factor in. You won't know till you test drive it.