I think it depends on what year your truck is. My truck has a sticker on the front radiator brace right in plain sight you can't miss it. It has a diagram of the vacuum and emission system as well as giving the plug number and gap that you need to use.
Join the Pavement SuA forum community dedicated to off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, drivetrain, and more!cks forum to discuss all types of off-road activities, vehicle modifications and repairs, land use issues and even camping and fishing.