fitztool

I have a 86 Firebird, 358 Dart Iron Eagle Small Block, and I need a better flowing exhaust. The motor was previously in a 69 Olds F85, Had long tubes with true dual 3" Exhaust. Its now in my Firebird, and has headman shortys and y pipe with a 3 Inch Single catback(no cats). It runs way to rich, as it cannot get enough flow. The motor was built to redline at 8k, and it was tuned perfectly in the F85. The Firebird is lowered with eibach Springs, Spohn and BMR suspension components matched to KYB shocks. I went into a exhaust shop in madison here, which I was told was the best in the area and he told me "to forget ever running that setup on that car and that any longtubes made for that should be tossed out the F***'N window." I told him to F off, and as I was leaving he told me if I got done somewhere else, he would pay for it because it couldnt be done. I still want the exhaust to exit the rear of the car, not dump before the axel. Anyone got any pics of the underside of there True duals and how to route it? And a good place in Wisconsin to get it done right?

Thanks,
Mark