Stock roller pivot lifters will gain you next to nothing. Less than 5hp. That'* alot of work for little gain.

PM sent Jimmy.

Will, I agree. However, I am on a mission to kill KR @ WOT that has been a nagging problem for a very long time. I highly suspect a head gasket edge sticking into the combustion chamber, but can't be positive. It might be some other hotspot. Since the only way to thoroughly inspect the chambers is by ripping the heads off, I might as well do it right. The rockers? Probably Yella Terra. Just gathering parts now, long term project here. If I am lucky, once they are off, I will see the issue and fix it, if not, I had some fun and can then focus on a potential fuel issue, but I am not pushing enough boost with a stock pulley to require more fuel (Injectors are known to be good (flow matched from FIP) and fuel pump is a new stocker).

Oops, that was off topic, sorry.