I put everthing from my p90 head in a bag when i sent the head to the machine shop. The machine shop cleaned it, pressure tested it, put in my new springs, valves, seals,keepers etc. So now all I have in my bag is the springs for the rocker arms, rocker arms, lash pads and these little metal rings. I'm not sure where they go but i know they came off the head. The machine shop didn't use all my old keepers i still had about 4 left so im assuming they already had some and used those in there, maybe they had some of the rings they had lying around and used them? I have 12 of them, I hope they didn't forget to install these or something or i will have some words for them monday morning. I checked the haynes manual and they don't show them in there.
Thanks