Fits all 2008-2009 Pontiac G8s and 2014-2017 Chevrolet SSs (automatic and manual);95-durometer polyurethane bushings limit engine movement without excessive NVH;MIG-welded 1/4-inch plate steel;Black anodized 6061 billet aluminum machined spacers;Grade 10.9 hardware;Reduced engine deflection;Better throttle response;Quicker reaction times;More accurate shifts (Manually-equipped cars) ;Engine can be easily lowered ?-inch or ?-inch for more under-hood clearance;Weighs about 2 pounds less than stock motor mounts;Designed for street performance, drag race, and road race applications;Designed to work well with any power level;Durable powdercoat finish;2-3 hour installation time;Proudly designed in the U.S.A.;Proudly made in the U.S.A.