Haven't had any issues at all with stock rockers or the stamped ratio rockers that are stock type. Plenty guys running stock hemi rockers also. With the head you have, Champion rockers work nicely and are stronger than stock, I really like those, you can get them in 1.3 ratio or stock 1.1 ratio from Stout Racing, the ones for the gx200/clone will be the ones you need for the RTC heads
