The stock system with the 2.3 was all on the right side , sedan or wagon , the V6 had a Y pipe that moved over to the right in the rear , but for a few years they did have a duel system for the V6 but ended up on the right to a duel inlet muffler , see mustang two with same set up , done one wagon with duels on both sides but you have to cut out the spare tire tub and install a plate and installed a boat tank in the middle ,