http://www.autoanything.com/exhausts...3A3270872.aspx
This discussion has been ongoing in another forum, and one of the senior HUMMER members highly recommends the dynatech over the multitude of setups out there. He praises the quality of the set-up and says it actually improves torque and low end performance, which is what I'm looking for with my deuce towing a trailer.
If I understand it right, you can hook this system up to the factory exhaust, or do something more radical like the Corsa system, which is the route I'd love to go with the Dynatech.