When removing the VVT function you need to swap the VVT timing protect with built-in cam phaser for your stock Gen 3 timing protect like this a single. Other rectangular port 6.0 engines you could possibly rating during the junkyard to your 6.0 LS build include things like the L76 https://directory4web.com/listings13382300/not-known-details-about-obs-auto-parts