The handmade and hand-welded air box is designed to mount in the factory air box location, using the factory mounting points. All mounting hardware is included. Intake tubing or coupler not included. Air filter is washable and reusable and also available separately. BLOX air boxes are proudly made in America. The air box is designed to work on and EG chassis with the OEM engine or B-series or H-series engine swaps. Testing on a stock SOHC engine showed gains of +7HP and +4 FT/LBS.