Finally a wing that works - so well in fact that it actually reduced lap times at Willow Springs Raceway by 2 seconds. Adjustable pitch wing, using hardened aluminum hardware, makes it easy to adjust the right downforce. Side air inlets provide extra cooling and have built in screens. Quality and fit is unsurpassed. 1965-94 911 includes rear deck lid, 993 grille insert w/clips sold separately, 1995-98 993 bolts directly to existing deck lid and uses existing grille insert.