what gear for hydraulic roller cams?

On CCams web site their solid rollers extreme series cams they state billet steel I call belony as RAMM stated , It’s a Austentic core I use their XR -274R and use the Mopar performance distributor drive shaft with harden tip with the standard gear as I purchased the melodised gear from Hughes thinking I required it. That was a waste of $ 90.00 dollars plus shipping .