Well, a sportbike filler looks cool and aggressive, but it isn't exactly stealth but it looks way cooler than the old twist off stock unit and the Hagan flip up style is a little too street rod for me and the hidden 56 unit is just right. Out of sight and out of mind but the most time consuming and costly option. Personally, I would go sportbike/racecar style. Air Ride even sells them
www.ridetech.com
Keep us posted!