I’m throwing together a built in 74, 340 short block I have, for a day two 69, 340, 4spd dart. I will be using my leftover parts from yrs gone by of my race stuff. With that said I know they are heavy etc etc. This motor ran for mere minutes and is mint. I am running these pistons with a good set of w2s with a solid roller. The pistons had pin buttons. I don’t want to run them as they gently scratched the bore in a couple of bores. I want to know the measurements of a original pin and the clip please, so I can get some new parts coming. Does someone have one they could measure? I think it’s 3” long with a .050 clip. Obviously .984 dia. Is this correct? My pin button pins are long and not able to be used with a normal pin clip. Thanks