Dave,
You do not have to go the extremes Rick has suggested just to make your SPF more fun (and safer) on the track. Olthoff Racing offers lots of performance upgrades specifically for the Superformance Mk III, including custom Bilstein shocks. Check out their website:
http://www.olthoffracing.com/index.p...d%20suspension
NO ONE knows more about getting the most out of a Superformance than Dennis Olthoff. Give him a call and let him know what you want to accomplish.
Steve