If improving performance without sacrificing fuel economy is your desire, then the EMPI EPC 34 Dual Kits are the way to go. All Kits feature: Aluminum Alloy Hex Bar with Steel Ball Ends - Sealed Aircraft Heim Rod Ends - High Flow Aluminum Intake Manifolds -Thick High Strength Steel Linkage Mounts - Gauze High Flow Air Cleaner Assemblies - Coil Relocation Mount - Brass Fuel Tee - Detailed and Illustrated Instructions - Attractive EMPI Packaging