[HUMMERcustoms.com/TAZ]

If You will go to a performance exhaust shop they usually are able to here what You talking about and help get You there. If You go to a muffler shop it may happen it may not. the performance guys are not looking to do anymore than You want they just seem to understand more what You want. I had no idea what I wanted before dynatech headers and cat back system but, wanted true duals.
Talked to several type of shops and said could not be done. Went to a perf. shop and asked them and the guy said sure I know what You need. I told Him I would be coming back later with a header, catback system and told Him which one. without hesitation he said we need to do a 3" dual off each manifold and bring it into twin flowmaster super 40's. Not louder than 40's but deeper sound He said. He said that they would come out of the mufflers with 2 1/2" pipes because You could not get 3" ovewr the axle just from looking at it but, He felt for sure could get 2-2 1/2" pipes over and in the stock location. Pulled it in and it sounded perfect. You could feel the seat of the pants difference. When I added the header catback system got them from a sponsor and they installed and asked who put the duals on. Told them and they knew them and said they had left everything at the right place for us to just hang and bolt on. So the moral of the story is go to people who are use to dealing with performance mods and You will most likely get what you are looking for. If they are prof. enough like My guy was He said if I do not like it He will change it no charge. He did not have to eat that bill it was better than I could have imagined. I like a louder deeper sound so My guess is if You ran 2 true duals with 50's flowmaster You would get the perf. and the sound You like. But, let a shop that builds and races cars but, own a perf. exhaust to feed their habit and You will most likely come out better.
TAZ