Never messed with pcv on mine - just removed resonator and plugged it. Also added lbz mouthpiece and s&b intake, egr blocker plate (never set a code), EFI with edge cts and backup camera, fass fuel system, cognito steering braces, rare parts tie rods, upgraded steering gear box, kryptonite ucas, profab down pipe with 4" straight pipe, hid hi low and fog with LEDs everywhere else, a mike l transmission, a fuel rail relief valve shim kit, bilstein shocks, upgraded rear cab mounts, and I think that's it. The factory limited slip doesn't work so I still need an upgraded LSD. Not all those items are necessary obviously but that should cover most of what you need. Oh, and I did the transfer case pump rub fix when replacing trans as well as ice picking the injector harness. I'm sure there's more I forgot.