Fortune Auto 500 Air Piston
 

Does anyone here run the Fortune Auto 500's with the air piston setup for street and track? Are they reliable for track or should I just stick with the regular 500's.

Just like any other cup kit, air or hydraulic, they're really only used for clearing obstacles although I drive down the street in mine when I leave in the morning to avoid raising and lowering it multiple times. However, once lowered they function as any other coilover so you shouldn't have any other problems with them outside of normal maintenance (checking lines, emptying water from tank, keeping a backup compressor if they use Viair :p ).