Once our filter charger, exhaust, chip, cam, and abd upper stress bar were installed our motor mounts had a hard time keeping the engine strapped down. The throttle body would hit the upper stress bar. So we turned to the turn two hardened eurothane front motor mount to keep the engine in check. The installation was easy. Remove the allen screw below the front motor mount. remove the stock rubber mount. slide in the new hardened mount, install the washer, and re-install the allen screw. This should take you all of about 30 seconds to do. After installation we noticed quicker response due to less engine flex and it also eliminated that (thunk) sound when the throttle body hit the stress bar. We did not notice any more vibration than normal. For 50 bucks the mount seemed to do it's job well.