James gets started by removing the old exhaust system, which necessitated removing the gas tank, as well. We could’ve removed the exhaust by loosening the shocks and removing the rear springs. However, our Bullitt needed a new fuel-filler seal since it was causing an error code and Check Engine light. James would kill two birds with one stone by removing the gas tank. Doing so made it a lot easier to remove and install the tailpipes, and we’d get a new filler neck seal installed at the same time. It was a win-win. Here he lines up both front sections of the X-shape crossover pipe, loosely attaching them to the factory exhaust manifolds.