COMP Cams XTREME ENERGY Hydraulic Roller Camshafts, XE278AH (1999-2012 FORD 4.6L & 5.4L SOHC Modular 2 Valve 8 Cylinder) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS