https://www.nopistons.com/forums/pub...IR#>/smile.png hi all sorry for the stupid question been right threw the old threads lookin for answers ,either clicked to fast or am blind but i am putting a 600 vac holley on my n/a 12a series 2 anyone know what jets and springs and colured cams needed its a fairly stock engine ,any help appreciated, thanks and again sorry for the stupid question https://www.nopistons.com/forums/pub...#>/biggrin.png