11. Now, this system was designed for a first-gen with a stock leaf-spring rear suspension. We, however, have a Heidts four-link, and this is where going to a professional shop like The Muffler Man really paid off. After sloshing it around his cranium for a bit, Jake figured out a way to go over the axle and under the Panhard rod. The process was trim, fit, trim, and so on, until it looked right. He then tacked the pipes in place.