I was interested in the PST stuff for a long time. There are a lot of options out there now. I really recomend the opentracker stuff. If nothing else you should at least get the roller spring sperches. His strud rods are also great (all of his stuff is).
I rebuilt mine with PST polygraphite a few years ago and have been very happy with it, given that it's essentially a stock rebuild. The poly firms it up a bit (I guess, anything firms it up when it's 35 years old and you put new parts on). It's no corner carver but the squeeks are gone and the whole front end feels tighter.
Installation was no problem, if you have a spring compresser.