Which would be the best upgrade for my V6 ecotec engine a camshaft or ultra high ratio roller rockers? I am not too sure which will give be me more power.

In regards to power gains between the two, an appropriately sized cam (such as our line of COMP Cams) would yield more gains then our 1.98:1 ultra high ratio rockers. In saying this though the cam option is also a more expensive one to do properly, especially if you were to pay someone else to do the work. It's for this reason that our rocker upgrades are quite popular due to the fact that they offer around 80% of the gains of a cam upgrade for up to around 20% of the cost.