Roller cam fuel pump rod?????

[nasty72nova]

I have a retro fit hyd roller cam in a sbc. Howard's HRS 110245-12 is the part number. What is the correct fuel pump push rod to use in order to avoid wiping the lobe out?? I see they make roller tip fuel pump rods but what keeps it from just spinning in the bore? I wanna get this right the first time. I will spend the money to have it right. (Not that i have it) I invested $800 in the cam so I can't afford to ruin it.



Thanks!