PART #3159 Tri Comp I Dragster Scoop (Use Plug #1997) Base 22" L x 13.75" W, Overall Height 21", 20.25" to top of opening, 7" x 8.25" oblong at widest point. The Harwood dragster air scoops are the 1st choice of the nations top racers. It's perfect for many drag racing and boat applications. You must provide a reliable day time phone number with your order. If you have any questions please call 800-822-3392.