Best spark plugs to replace with?
Gonna get my plugs changed, found a guys going to do it for 80 dollars. I just need to know which is the best spark plugs to replace the factory ones with
2004 F150 XLT Supercrew 4x4 Black/Arizona Beige 5.4L V8, Loaded (current)
2002 Mustang GT Convertible Triple Black, Mach 1000 (Summer Car)
2001 Ranger Edge Supercab 4x4 4.0L 5speed (Sold to Cousin)