Well my 370s from PDR are in. I did not get any instructions. I just put them in with the washers that were on them. It was a PITA to get the square o ring into the retaining nut. I did that with a dental tool. There was an installation kit included with some funny rubber cover or boot things which I have never seen before. Any body know what they were? Also there are washers in the install kit but I figured it was better to use the ones that came on the injectors. If anybody knows of anthing I need to change tell me soon because I am going to put everything else back on the engine soon!