Does anyone know the diameter of our exhaust pipes and what inlet/outlet diameter I would need to get if I ordered a performance muffler? I am looking at a flowmaster super 44 for my 3.5L. I was wondering if the pipes were the same on the 5.7 and 3.5. I asked on the V6 forum and no one replied.. Also, does anyone know the part # for the flowmaster super 44 for the 3.5 and what the offset of the inlet/outlet on the muffler should be? Thanks.