When I did my Dart 10 years ago, PST had the most complete Kit. I had to add the Pittman Arm as an adder, but everything else was in the Super PolyGraphite kit. It didn't make a noise for about 6 years, now it squeeks a little when they are cold, but that's the nature of the beast when it comes to Poly-anything on front-end's.
Have been so happy with the PST kit on my Dart, We bought the full kit for my Son's Volare from them for one of his Christmas presents. Will be installing it fairly soon.