Help Selecting Correct Z-bar And Rods For I6 And 3-speed

I need help figuring out which Z-Bar and rods I should be purchasing for my inline 6 200 and 3-speed transmission. The car is a 65. I have a diagram from the shop manuals and they list part numbers but the actual parts that I've looked at don't have anything stamped on them. Do any of you know of any dimensions or other distinguishing feature that will help me determine the correct part? On the set I just inspected the upper rod wasn't threaded and my diagram looks like it shows a threaded rod with a side picture showing a non threaded rod. I'm confused.

I do have pictures that I can post if that would be of help.

Thanks for the help.

Duke City Novice

OK, done some more researching and now realize that the Z-Bar and rods are from a 67-68. So the rods won't work but does anyone know if the Z-Bar changed during those years?