I have a old set of comp 1.7 roller rockers, which supposedly were never made.... i need a sleeve that go's over the bolt into the rocker shaft. Called comp cams, they said they never made them for these engines. I told him there older and they stopped making them. He said they had to been modified from something else that he would still show a part number? I know there still a few sets out there people are using. Does anyone know a part number on these, or if i can get the sleeve from one of there other set up's?