not sure what your area is like, but we have a local guy we call "Muffler Dan" who does excellent mandrel bent custom exhaust work. He ran a true-dual setup with a dual in-dual out flowmaster under my buddies old MN12 1994 T-Bird. 3.8 V6 no less. Came out really nice and sounded even better. Check out what prospects for somethin like that are like near you