Converting to a roller cam

Not all roller cams are billet steel. If it is a cast cam, you do not need/want that $200 oil pump gear. Ask the cam company what the cam is made from. Most are cast iron just like all other cams.

You know you need special short push rods. And most heads will need the pushrod holes elongated and/or enlarged.

Mopar small blocks don't need a thrust button. You have that plate on the front that holds the cam in place.