First mod for most performance street cars is normally lowering or suspension. Whether its just a high quality set of coils fitted to the OEM struts or if its a full set of coil overs I can facilitate the fitment and calibration to your needs. Airbag suspension has grown in popularity and reliability in the last decade and there is now many options for lowering an existing Airmatic car using links or even a full aftermarket Air-Ride kit, just let me know what you have and lets explore the options.