The look, feel, fit, and finish are factory quality thanks to the direct molding process STILLEN employs. Molding the urethane directly to the body of a 350Z at Stillen's in-house design studio, craftsmen are able to understand the car's contours first hand enabling them to produce the best urethane products possible. STILLEN has been creating urethane components in this fashion for decades, and the 350Z kit is no exception.