Lewisville Muffler is Amazing. They have great customer service, and will go out of their way to help you out in anyway possible. I went there hoping to get a quote on replacing a catalytic converter on my 07 malibu. I had an idea it was going to be around 600. They told me it was actually both of my converters, which devastated me. I knew I couldn't afford it. Then, they actually took the time to research and look for ways to save money. The guy that helped me out actually found a special coverage warranty for my model and my converters were actually covered. I set up the appt with Huffines Chevy, and they did the work and replaced it free of charge. I had tears in my eyes. They truly made my christmas special, and I can't thank them enough. If you want to be well taken care of, go to Lewisville Muffler!