[19bonestock88]

The biggest parlor trick will be a ceramic coating on the combustion chamber and ports but that treatment has only usually gotten people 5-7%(in power output) on average. The head will only be shaved a little and the valves currently installed in it have a slightly flatter face, all adding up to a little more compression but probably not much. The shop that’s going to handle the port work and valve grinding has done numerous race winning cylinder heads and is well known in the Ecotec community.