This MagnaFlow exhaust system is perfect for classic muscle car enthusiasts who want to enhance their driving experience. Whether you're cruising on the highway or showing off at a car meet, this exhaust will make your car stand out. It's designed to fit 1964 - 1967 GM A - body muscle cars like Buick Skylark, Chevrolet Chevelle, Oldsmobile Cutlass, and Pontiac GTO. The main piping is 2.5 inches in diameter, and the tips are 2.75 inches. It's made of durable stainless steel that can withstand different road conditions.