97 F-150 (submodel: Base, Lariat) GAS, For vehicles with 18 gallon Tanks only, Behind Rear Axle, 34-3/4 x 27 x 7-7/8, Lock Ring Kit Included. 93-95 F-150 Lightning GAS, For vehicles with 18 gallon Tanks only, Behind Rear Axle, 34-3/4 x 27 x 7-7/8, Lock Ring Kit Included.