I know there are many debates on whether or not headers are worth the money but I am still considering them for my vehicle. I would like to purchase the stainless works longtube headers with the hi flo cats but I have only seen one other person on here that has them. The thread was from 2012 and the person said the headers were insanely loud. Is there anyone else that has these headers and experienced the same thing? I also want to install an air/fuel gauge when I install the headers and I have heard some say the stainless works headers have an extra spot for an additional o2 sensor...is this true? These headers would be going on a 3.5 SE. Thanks!