Hello Bo,
Don't worry about the questions, that's what this group is for. Keep asking questions until your car is running great.
The W113 cars do not have a linkage "kick down rod" at the engine. The electrically operated three position solenoid moves the "kickdown rod" on the side of the transmission. Later M130 sedan engines had engine/transmission linkage rod requiring use of that third ball on the linkage arm. Chances are the linkage arm has been replaced with the three ball version which will work fine. One ball will not be used.
As far as connecting it up the cylindrical part of the linkage goes on the pin first. The short arm is at 12:00 and the long are is at 9:00 as you view from the right side of the car. See pic.
Download Attachment: block linkage lever.JPG48.31 KB
Joe Alexander
Blacklick, Ohio