Mopar Performance Roller Rockers

Plain shafts with flash chrome are deadly to needle bearings
needle bearings require a heat treatable steel and a good heat treat- not chrome
chrome works with aluminum or bronze but it should be industrial hard chrome triple plate, bronze to bind to the steel, nickel for hard then ground, then thin chrome cover
ever see dipped chrome directly on steel peal off a cheap bumper or tool- you can cut the hell out of your hand