Need help with linkage installation!

Please need some help! I have a 70 Chevelle SS with a 400 transmission. As you can see in the pictures this is where I'm at. I can't figure out how the shifter linkage attaches to the transmission. The assembly manual shows a rod that attaches to the steering column and then is connected to shift bracket and there is a illustration without the rod. Is there a square insert that goes in the bottom opening that will allow the linkage to connect to the bracket? I do have the bracket that bolts to the bottom of the pan but that is all I have left for parts. As you can see I'm all confused.