The pit crew installed a Hellwig 11/8-inch rear bar that mounts to the axle tube and to the frame, not the lower control arms and is rated at 321 pounds. With this setup installed the times got better than the stock-style bar by 0.10, but still couldn't best the times without any bar at all. "When mounting the rear sway bar from lower arm to lower arm (stock configuration), the input from road irregularities, bumps, etc. directly upsets the other side. The lower arms and the rearend are now tied together, so movement is restricted. Restrictions in the suspension increase the roll stiffness that affects the cars handling. Therefore the rear sway bar (the bigger it is, the worse it is) causes the inside tire to lift during cornering, thus increasing oversteer and reducing the cars capability to put power down. A sway bar that attaches to the differential and has the endlinks attaching to the frame does not have the same affect on the lower arm."