OK guys and gals....I`m entertaining the thought of duals for my monte. Looked under it and I don`t have the u-pipe I`m reading about. From manifold it goes to the cat then a muffler and then to the resonator. Been reading alot in here about the exhaust systems and there is alot on the newer cars and the 3.4`s but not so much with the 3.1`s. I`m all ears......... looking for performance more than sound....like the sleepers....