4 Josh noted the head pipe area is going to be the most challenging because there is less room, so he likes to start there. The head pipe will need to come down between the motor and framerails, and then point back. Keep in mind, in most cases the system needs to run under the transmission crossmember so bring down the head pipes so it's a straight shot. For rear-steer cars, like the Nova and Camaros, cycle the steering to determine the best route to take with the head pipe. In our situation, it worked out best to take the head pipe over the top of the steering arm on the driver's side. There was enough room to just come straight down on the passenger's side.