Thats an original TWR (Tom Walkenshaw Racing) Spoiler, if it is a TWR racing model, they were a very limited run of 12 cars with big valve heads, higher compression engines, hotter cams, uprated box and an aero pack, but this car dosn't have the front bib fitted. They were BIG money back in the day, it was an £18,000 kit! Seriously collectable if it is a genuine car!