[HUMMERcustoms.com/TAZ]

I suggest Flowmaster mufflers due to annual independent tests and rankings. There may be actually very little difference as well as someone always is coming out with the next greatest latest tech.

To get full potential of any muffler other improvements need to be made to the complete exhaust system also. If not any brand muffler will most likely do a good job for sound.

If serious about gaining performance I suggest the complete exhaust conversion of Dynatech stainless steel long tube headers, which increase low end torque nicely and their stainless catback system tuned to the headers. Next a true dual exhaust using 2 Flowmaster mufflers 50, 40, Super 40 or 44 series depending on deepness of sound etc.. I think you can hear sample sound at their website. I went with Super 40's but, at the time the 44 series was not out yet or most likely would have went with 44's.

If mufflers are stood up length wise side by side on the edges not flat as usual, even welded together for extra support, they can be put in same location where the huge 1 factory muffler was. You can go with 3" pipe into each muffler and 2.5" coming out of each. This will let you get 5" flow over the rear axle in factory location. We tried to fit twin 3" tailpipes but, we felt it did not leave enough safe space between brake lines etc. based on the total app. picture of the H2 we are setting up with forced induction. Have them to cut tailpipes off up high in factory location pointing down so to be sure not interfering with off-roading if you do that. If you do not they can run one side of tailpipe across to other side of H2 so you have a chrome tailpipe on each side.

I sent my complete system off to Jet Hot and had them coated inside and out with the polished finish, for now my rig is a show Queen. If you go to turbo or supercharger as I have done the coating reduces the temp on surrounding areas as well as to interior significantly.

Good Luck and hope I have been some help.

TAZ