For the AC parts, the best source is Classic Auto Air in Florida. They do not have 65 GS specific parts sitting on the shelf like AC hoses/tubes, but the can take your originals and re-manufacture them using new hose material and crimps along with your original tubes and fittings. They can also re-plate all the metal parts on the hose assemblies for you. They can get you complete rebuilt AC compressors as well as things like seals, bearings, etc for it. Another great service they have is they can take your original dryer assembly, cut it apart, and rebuild it with new desicant in it. When they are done, it looks just like it did when it came from the factory whereas the aftermarket dryers look completely different and do not fit in the bracket properly. In addition, they can rebuild your POA valve and make replacement metal tubes (use your old one as a pattern). Another trick they have is they can re-calibrate your POA valve for R134 when they rebuild it.