This fits my Chevy Avalanche 04 great, I had to take it to a muffler shop to have it welded for $80 which wasn't a big deal. I was thinking of mounting it myself with clamps, but I know for a fact that welding holds everything together better. I really like the sound of this muffler, it's aggressive but not too crazy to an uncomfortable point. Like on the freeway, I can't even hear it with the windows up and the radio on. This is actually what I was looking for because sometimes you get louder and then you get fed up.