Here is a pic of my friend's 3 on the tree linkage:
The part that pinches the rod and allows it to swivel is the same as the auto. It uses the same rubber bushings, and the trans. end uses the same hard plastic bushing with a shoulder, just like the auto uses. Other than that, nothing else interchanges. We replaced the plastic bushings at the trans end with one made from brass tubing on both trucks, and I found a place that sells repro rubber bushings for the upper end, but had to reuse the insert tube, because the one that comes with the repro is too small. It tightened up the shifter, but it stayed that way for only about a year. It is sloppy again, and I'm planning on making a bushing out of brass or bronze.