A little more follow up. I talked with Terry today. He confirmed that F7RZ-7412-AA is the correct part number for one of the two ends, but he couldn't find the part number for the other one. Armed with one part number, he felt that a parts man should be able to help me find the other part number IF IT IS STILL AVAILABLE. If it is not still available, the entire cable assembly from the later style would have to be used. That is probably how Ford services everything now, with the Cougar style cable that is interchangable as an assembly but uses different cable ends.
The reason this is a problem with those that have installed the Focus shift tower is that it has a ball end where the cable attaches where ours has a straight shaft.
He also said that he has aquired a limited supply of the of the early style shaft that he can install on the Focus tower if needed. He also said that those are not for sale by themselves, only as part of a trans overhaul.
(Those of you that have installed the Focus shift tower, save the old tower, you may need to see if the attaching shaft style pins can be removed and transferred to the new one some day if you ever need to replace the entire cable.)
Let me see if I can explain this another way. If you use a Focus shift tower, you must either change the shafts over to the original style, not the Focus ball end style, or you must use the early style shift cable with Focus cable ends. The appropriate cable ends cannot be installed on late cable. The Focus cable cannot be used because it is too short.
I'll dig into this a bit more in the next few days. Armed with part numbers, I'll see if they are available. If not, it looks like I'll be spending a lot more money as well as most of a Saturday changing out the cable.
Before doing that, I'll still try to figure out if there is some alternative for the bushing itself, like maybe a solid piece of nylon.
