Has it been running recently ? If not put a little Marvel Mystery oil down the plug holes , pre oil with preoiler ( can make from disrtibutor with no gear on bottom and a tack welded rod to chuck in drill on top ) , or at least pour some oil down in both valve covers when you change it ( use the pcv for the other one with a skinny funnel ) I would do more than plugs , I would do the whole ignition system with lifetime warranty plug wire and coil , new module too . I would get new belts and hoses . Even if what you have looks allright , it would be better to take what works now and put in the truck as spares , and have all new stuff on engine for piece of mind /forums/images/graemlins/k5.gif