Included with the GSR head I got from CarAudiophile were seven of these: That's me holding one up next to the rod thingie that holds the...um...lifters in place. I can't think of what theyre called...blah. Anyways, I have no idea what the fuck they are. My closest guess would be wristpins, but there's seven of them. :shrug: Mods feel free to move this to whatever forum, I don't know what the fuck they are so I have no idea what form this should go in. edit: The head was all in pieces, so I had to put it together (or rather, put what I have of it together )...A friend of mine had a 99 gsr head that his cams locked up in (assembly lube ownz j00), and I stole everything that my head was missing from his...and there is NOTHING on the head assembly that resembles those tube thingies.