Also ordered the Comp Cams rocker trunion upgrade kit. It looks like it's pretty easy to install according to the YouTube video I watched. Thanks for the heads up @bottomline2000 ! Harmonic balancer bolt ordered also since it's a one use bolt. I sure hope I'm done buying parts for my cam upgrade, that escalated quickly. Almost $1200 for cam, springs, pushrods, seals, timing set, cam retainer, rocker trunion upgrade kit, and necessary hardware. But that will be a huge upgrade for the LQ4. I'd better go back to work so I can pay for all that.