HSP truly stands by their product with Top Notch service! I love the quality of the Max Air Flow Bundle. A lot of companies build good quality parts, but then send you junk hardware or worse yet, are impossible to get help when something goes awry, but not with these guys and gals! I did have some challenges with the installation on my LML, but with the help of Mike at HSP and Ariel with ZZDiesel, I was able to work through them and get my truck performing at its BEST!! Thank you folks for making my experience a very good one. It's this exceptional level of service that really sets you apart from the competition and encourages me to recommend your company to others.