This rear diffusor was designed and proven on our own 2006 Mustang GT, which we compete in American Endurance Racing. It is constructed using a carbon/honeycomb sandwich panel method making it light at only 12.5lbs, yet very strong. Below we've linked a great explanation video for how diffusors work. Don't be fooled by other companies "diffusors" that are made for show. Since race cars have different ride heights, exhaust routing, fuel cell, Evap canister, etc. the final mounting solution and diffusor location is up to the end-installer. Some changes may need to be made to the exhaust routing, or the bumper may possibly need to be slightly trimmed to facilitate fitment. Please contact us for fitment information/advice.