I am restoring my 914 and I had the sway bars powder coated. Now I'm working on installing the bushings onto both the bolt and sway bar balls. Based on the picture in 914 rubber it looks as if you are suppose to do this prior to putting them in the drop links.
That said I cannot figure out how to get the bushings into the drop links. It seems like they are very easily damaged so before doing something stupid I figured I'd ask.