The exhaust tips are very high quality, as I would expect from Borla. The problem is that the inlet diameter of the tip was so close to the outside diameter of the Chevy exhaust that the mounting hose clamp would not fit. I had to take a Dremel tool and slit the inlet tube of the Borla tip and put the hose clamp on the outside. More work than I wanted, but the result was just great. I would tell Borla to check the OD of common exhaust pipes on US cars like 2014 Chevy Impalas (which need tips).