Driven by the Driven and laser focused on Porsche excellence. If you're looking too steep in Porsche lifestyle, a first-class driver development race program, your next custom build, you're in the right place. With a history dating back to 1988, Kellymoss follows a performance-driven philosophy which has led to 34 National Championships and world-renowned recognition for our custom vehicle builds. From the track to the street, our winning history provides confidence no other shop can match - that's the Kellymoss difference.