Bronze fuel pump push rod

Are you sure your roller needs a special push rod? Many rollers are iron these days and dont need the special billet stuff.
The guy I'm buying the cam kit from told me I will need a bronze fuel pump push rod which he doesn't have, crane cams has a special push rod for the hydraulic roller cams but I can't find the number, apparently Crane went out of business from what I hear but they still should have product out there.