Removal of Stock System: 1. Separate the stock exhaust at the slip joint by the muffler. Remove the rear exhaust from the rubber hangers and remove the system from under the truck. 2. Using a 15mm socket or wrench, remove the two (2) bolts at the turbo flange and remove the stock down pipe. 3. Remove the spare tire. You may not be able to reinstall your spare tire after the installation of this exhaust system. Installation of MBRP Inc. Performance Exhaust: 1.