I know that, what i was saying is, i have always used stock stuff so measuring for a certain length pushrod will be new to me, so i got to looking for videos explaining how to do it and i could only find the video where he is using roller rockers..I didnt plan on using roller rockers so was saying i dont know how to set up and measure with regular rockers as regular rockers dont have the roller that would roll on the marked surface of the valve stem to see where it hits..