I have a custom ground steel billet hyd roller cam from Comp Cams. it is a serial # with a -9 on it; Steel Billet core.
I use the bronze dizzy. My engine builder says there is plenty of oil running in that area that the bronze gear will be fine. He expects that it will last a long time before I have to change it. I will check it though often. He also believes with a stock mechanical pump I do not need the bronze tip fuel pump pushrod. I am going electric anyway. Just to avoid the whole issue.