Right now I've been looking at getting different mufflers for my 5.0. Right now I have areo turbines with a 2 inch turndown before the axle. It literally sounds like my car is blowing air at a fast and loud rate. I've been looking at series 10 flowmasters and looked up some clips on YouTube. But some of these mustangs sound like their running hot cams. So throw some suggestions out there.