I have to give a big thumbs up to Bob Murray and Thunder Alley Pipes. The core inside of my TA pipe broke a few weeks ago and I lost all of the packing. I couldn't repack it because of the broken core. I sent it to Bob at Thunder Alley and he sent it right back to me fixed and as good as new!! This exhaust is awesome and I really can't say enough about how much Bob stands behind his product. Awesome product and awesome service.