Now in stock! 2005+ 4.6 3V Mustang / F150 MMR Billet Chain Guide kit [463400] - $399.99 : Modular Motorsports, Home of the Worlds Fastest Modular Engines No more broken guides on performance applications!! Recommended for all 6000+ RPM applications and ALL forced induction applications!! Fits all 4.6 blocks (iron and alloy). *Includes both Pivoting and Fixed chain guides *Constructed of Billet Aluminum vs the stock weak casting *Eliminates timing variation under high RPM and load. *Reduces 2-3 degrees of forward/aft movement at the pivot. *Works with all other factory and aftermarket components. *Red Anodized for wear and corrosion resistance *Replaceable wear strips *Lifetime warranty against breakage. *WEAR Strips INCLUDED