96-97 it was only on the RS an the very rare F1 package not sure what year that started/ended, I know I've seen a 95 F1. 98-02 the RS was dropped and the (Y3F) sport appearance package was add which included the 3 piece spoiler, 2 side skirts, rear valance and 2 piece front clip, which the front is usually missing on most of the 98-02 cars for some reason.