If you're shopping components w/ spherical bearings or rod ends pay attention to the liner material. Nylon doesn't last long. Kevlar is slightly better. Anything w/ an exposed joint will get slop within a few months. When we narrowed the track width on my last project, I needed to increase joint angles to regain lift & learned the differences after replacing tierods I converted to spherical rod end.
sorry, my english is not the best, so I´m not realy sure whats the right name of this bushings.
Are this bushings the "Polly Lower Inner" on your list?
Where do you get them and are you satisfied with them?