Stopped by the local "Custome Exhaust" shop today to get a quote on some duals for my '73 K5. The guy at the shop was pushing "MelloTone" mufflers and completely ripping Flowmaster. "Flowmasters are garbage. They used to be good but have been bought out. No warranty. MelloTone bought their patent for the chambered design and gives a lifetime warranty, etc, etc." Anyone know how true this is? I was really set on a pair of Delta 50's! Also, I was quoted 4 hrs work and 200+ dollars to "install" my headers I asked only so I didn't have to drive across town with a wide open exhaust to have the remainder done. I think I'll be installing my own headers Another question, apparently no one does mandrel bending in the Central Florida area due to the cost of the equipment. Anyone ever use one of the prefab kits by Hooker (or any other company for that matter)?