I was rearended by someone doing 65 MPH. Cooksons claimed they changed my entire exhaust. A year later, after a years worth of excrutiating migrains that could not be treated, My muffler went. Cooksons, never repaced it. The seal was broken from being hit, it was crushed like a soda can, and it rotted out leaving me stranded two hours from home. I called them, they denied it of course. Unfortunately for them, the numbers they claim were on the muffler they replaced mine with, do not match the numbers on the muffler we took off the car. I am not the only one who has had this problem with them, just the only who's willing to fight with them about it!