Universal design fits most chassis and all popular automatic or manual transmissions. Because it's made of premium .040"-thick aluminum, this Chassisworks assembly is more durable than tunnels being sold throughout the industry. Your complete installation kit includes driver-side and passenger-side transmission tunnel with attached matching floor pieces. PVC coating protects the finish during installation. Tunnel is 28" wide by 27-1/2" long. Driveshaft cover is 28" wide by 36" long. Driveshaft cover is shipped in three pieces.