Ford Racing Performance Parts - 07-11 Mustang Shelby GT500 2008 Ford Racing OEM GT500 Balancer - improved design The 2008 GT500 balancer is of an improved design, nearly half the weight of the 07 balancer. The 2007 GT500 uses a very heavy 26lb balancer, which results in a lot of stress on the crank snout. It is recommended to upgrade to the 2008 part when installing an aftermarket supercharger or raising boost on the stock supercharger. Includes: •2008 GT500 OEM/Ford Racing balancer •Longer M12 crank bolt for installation •Three M10 bolts to remove stock 07 balaner with standard removal tool