This MagnaFlow exhaust system is perfect for muscle car enthusiasts who want to enhance their car's sound and performance. Use it when you're cruising on the highway or showing off your ride at car meets. It's designed to fit a wide range of cars from 1967 - 1975. The main piping is 2.5 inches in diameter, and it comes with a crossmember - back layout. Installation is a breeze thanks to the direct - fit design, so you can start enjoying the improved sound and performance right away.