Aj Hartman E46 Hoods are an exact replica of the M3 hoods. They use a resin infusion process, along with high quality materials and a structured layup to build this hood which results in it only weighing 9.6-9.7lbs! This is a huge weight savings over even an aluminum M3 hood. It has a semi-finished underside. This will allow you to retain the HVAC inlet if you choose, or select our HVAC cover to close up the opening. It utilizes the stock hinges, but you must use hood pins with this hood.