I liked it. I used this when replacing the entire exhaust on my 5.4 liter F350. I used a Flow Master muffler and a high flow coil so I had to tweak a bit. I only used 3 of the 4 parts for my setup but having an extra is better than not having enough. Tubes can be configured in a variety of ways to work at different angles. They fit well, the curves are smooth and not limited.