Anybody ever seen or heard one of these?Its a 2.5 dual in dual out,and looks like a x-pipe on the inside.A guy at work had it and kept trying to sell it to me.Eventually gave it to me.He said it sounded"good"on his truck,but right now he has no muffler on it and thinks it sounds good.It sounds like poop.AnywayJust wnt to know if anyone has heard one of these.I havent been able to find one anywhere to see what they cost new. I saw one similar in summit,think it was a dynomax.