"Must be some fly-by-night cam company. I'd go out on a limb by saying that all performance solid roller cams are billet. Hydraulic roller cams "might" be cast depending on the manufacturer but they sure as hell wouldn't surprise you with it!"Try CompCams,they sell plenty of solid roller grinds on cast cores. Mopars are a little harder to come by cast cores at least for BB mopars. SB's come with a cast core that's often reground,but your very limited to what you can do with that.Crane used to make a good billet core with iron drive gear,it would be a good choice if you can find one the can be ground to the needed lobe/lsa.