5.4L - 8-cyl ( Description: 5.4L 8-cyl Engine Code [L] CNG; Fuel: Gasoline; Engine Code: [L]; )
5.4L - 8-cyl ( Description: 5.4L 8-cyl Engine Code [L] Propane; Fuel: Gasoline; Engine Code: [L]; )
6.8L - 10-cyl ( Description: 6.8L 10-cyl Engine Code [S] CNG; Fuel: Gasoline; Engine Code: [S]; )
6.8L - 10-cyl ( Description: 6.8L 10-cyl Engine Code [S]; Fuel: Gasoline; Engine Code: [S]; )