I have the powerflow pf5060 polished on my 300. I got this, because I wanted something that looks good, as well as adds a little performance. this has the filter enclosed in a stainless box, and the aluminum polished tube looks great. paid $317, shipped.Is Anybody Running The Injen Aic. I See It Is Quite A Bit More Expensive Than K&n Or Voilant. What Are Your Thoughts..if Your Dont Know About Them Theyre @340-370$