As a new buyer, I purchased this aftermarket exhaust header for my automotive project. My analysis of this product showed that it delivers excellent performance gains increasing horsepower and torque. The black coating gives a clean and sleek look to my vehicle. I had a minor fitment issue during installation, but it was easily resolved with some slight adjustments. Overall, I am impressed with the quality and performance of this exhaust header and would definitely recommend it to fellow automotive enthusiasts..