For nozzles, you can spend more and get the monark nozzles, George bought a set of them (v8volvo) and put a post up of his results, I think he listed who he bought them from. I bought the ones from the cheapo diesel parts place I have listed in the parts supplier's section, i think its volkswaparts.com. Autohaus had nozzles listed about a year ago, but I think they closed them out and quit carrying them. The nozzles I got are the chinese ones, but the quality was good and the price was right. Will they last 150k miles? Who knows, but I didn't have a bunch of money to blow at that time, and they did show a noticable improvement. Also they are the copy of the DNOSD273 which is the European "GTD" nozzle. As for shims, mercedessource sells a kit, though its not cheap. I scrouged around local vw shops and bought up core diesel injectors and took them all apart and made my own set. Between the shims that come out of your injectors, and if you can find any others you should be able to get a set built within pop pressure spec.
Jason
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