We used mandrel-bent 21⁄2-inch tubing we had laying around to build a Y-pipe. We thought about running a true dual exhaust, but there is no space for anything under this Jeep to begin with. Most headers for the LT1 have a 21⁄2-inch outlet so while we’ll have to go back later and swap that adapter out. Building exhaust at home with a chop saw and welder takes forever. Right now it’s just tacked together; we weld as much as we can in the Jeep and then we will remove it and burn it home with our trusty Lincoln Weld Pak 255 once all the tubes are ready to go.