Does anyone know what the best spark plug is to use one the 98 4.6? I don't have any problems or anything but its almost time and I would'nt mind putting something in that has a little more performance. Will a spark plug make a difference in power??


------------------
98 F-150 Regular Cab STX 4.6L, flareside, Tinted windows, Headers, K&N, Vortec Cherry Bomb Dual Exhaust, Hypertech Computer, 17X10 Eagle Alloys, 285/60R/17 Pirelli Scorpian Zero's, Alpine Cd deck, White Face Gauges