At our last track day at Willow Springs, I spoke with Rodger Sheridan(Sheridan Motorsports.com) who told me the 4 or 6 inch rear spoiler will help but adds drag (ie. decreased top speed). He said with a wing the car sticks like glue without losing top speed. "Otto" (
www.ottovenice.com) built a car and added a wing that bolts to the rear of the car(not the weak trunk lid). My front air dam seems to work but at WillowSprings turn #8( high speed decreasing radius turn), my rear wants to come around at about 100mph. Mr. Sheridan said with a wing he can go into the same turn a 140mph. So my next project is to fabricate a strut to mount a wing............robert d.