Our ZR4 Chrome Header is one of the best ones in the market. They have a clean chrome finish with a good angled bend so that the header does not stick way out over the tire. It is a step up and a lot straighter than the old ZR4 headers. They are a 1-3/4″ header and will fit 3.25″ / 3.5″ / 3.75″ ZR4 motors.