After resolving the idle surge problem with my new 351w, I went to the local muffler/speed shop for a dual exhaust system; The owner insisted on a y pipe after the second cat (no mufflers) and custom bent pipes to exhaust on both sides, they also installed huge angle cut chrome tips for a smokin' look: the reason for the post is that I was unsure about running without mufflers, but the sound is awesome!!! give it a try....note I live in Florida and am not subject to vehicle inspections total job $200