I had a non-stainless steel exhaust system previously, which gave me good service ( 115,000 miles). I replaced it with a Gibson stainless steel system; Very high quality, easy to install. I highly recommend Gibson. Although this system was "speced" for 2 WD only, it fit my 4WD Frontier perfectly!
Does not fit with factory tow package.
The exhaust is well made and is a quality product, but it does not fit correctly with the factory tow package. The tailpipe end contacts the tow hitch assembly. Even with countless adjustments and minor modifications, the piping consistently worked itself back into making contact and noise. I also feel the muffler is too small creating alot of drone/resonance in the cab of the truck. I think the kit should be built with 2 1/4" or 2 1/2" piping throughout with a larger muffler.