Its a 50 series big block suv muffler. Sorry I can't find the model number right now but I will look for it and post it here. The muffler on the H2 is the same as the the other GM full size suv's made in 2003. I talked to Flowmaster about four days ago. They told me what muffler was for the H2 and that if I wanted to wait they would have a bolt on cat back system ready in a few months. You know I can't wait for that now can I! C

First American Properties Inc. 916-858-2383
White 03-H2-LUX