Fits Mega Cab; Med. Duty 4WDor Regular Cab; 8 Foot Bed; Med. Duty 2WDor Regular Cab; 8 Foot Bed; Med. Duty 4WDor Crew Cab; 6'4" Box; Med. Duty 2WDor Crew Cab; 6'4" Box; Med. Duty 4WDor Crew Cab; 8' Box; Med. Duty 2WDor Crew Cab; 8' Box; Med. Duty 4WD