I ordered a banks monster exhaust for my 03 SO quad cab, but I ordered it for an 04 HO so it would eliminate the cat. I ended up putting the system on my 06 regular cab. The exhaust system is a turbo back. It goes right up to the turbo and eliminates the cast elbow. The system bolted right up no mods needed, I just left out one section of pipe that if installed, would have made it long enough to fit the QC. The system is well built and excellent quality.

The muffler, P/N 53801 is polished stainless steel, looks good and very well built. External dimensions are approx.4"in/4"out, 8.5"D x 36"L overall, case 24"L. Internally the the muffler has a 4" perforated core (no louvers), That opens up to a 5" expansion chamber then back down to 4" through the rest of the muffler to the outlet.