So i have a 2011 ford mustang 5.0. I currently have a cat back Borla atak exhaust. I am looking to buy BBK 304 stainless Long tube headers. My question is do i get the O/R x pipe or just do high flow cats xpipe. I am looking to hear videos of both. One with the O/R x pipe and one with High flow cats. If i went O/R how bad is the gas smell and is it ridiculously loud? By the way i am located in Florida.