I have a Lunati hydraulic roller (BTW - unless you keep the rpms really low I don't recommend it). They told me to send the mopar performance gear assembly to comp cams to get nitrided and never look back. That's what I did but don't have enough miles on it to comment how effective it is.

67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......