Custom manufacturing of automobile manifolds, crate motors, spark plug wire sets, stainless steel mufflers, ported 45-degree intake elbow adapters, headers, camshafts, and throttle bodies; Providing automobile porting services on intake manifolds, cylinder heads, throttle bodies, and exhaust manifolds and headers; none of the foregoing including manufacturing, selling, or servicing any add-on or motor vehicle parts and vanity accessories, namely, bumpers, grille guards, push bars, headache racks, automobile stereo and radio components, or electronic circuits