Check into the Stealth Bomber articles in Mopar Muscle mid 2004. I planned to do the same on my Duster using an x-pipe instead of the Y so I could use an electric cutout on the extra exit but I gor a smokin' deal on a TTI exhaust. Dyno numbers were included. If you are interested I probably still have the mags. IIRC there was only .5" backpressure.
Ron


In sixty-five I was seventeen and running up one-o-one I don't know where I'm running now, I'm just running on Jackson Browne-Running On Empty