I have a VZ SS Ute already upgraded with an otr intake, upgraded valve springs, extractors, full exhaust and mafless tune. I am interested in your 1.9 rockers to suit L76 V8, what power/torque gains at the rear wheels would you expect with and without a r

The power gains without a tune vary from 5-10rwkw. However after a touch up tune to suit the rockers you'd be looking at around 12 to 15rwkw.No need for stronger push rods at this level in saying that if your increasing the rev limit and will be frequently reaching and staying at high rpm then it would be an upgrade to consider