Anybody ever hear or use one of these on anything?Ididnt see them in the stickies.A guy I worked with a while back Had a 2 1/4 dual in 2 1/4 dual out magnaflow muffler he wasnt doing anything with,so I got him to give it to me figuring I`d figure out something to do with it.Problem is he got it from a friend and all he could tell me was it sounded good.I doubt I`ll use it on my car if I even could.It looks like a x on the inside.Closest thing I`ve seen was a dynomax x-pipe muffler on summit.I Just can`t find out anything else about it.