I ordered A 5" exhaust for my 2005 6.0L crew cab long bed. Im confused about the parts he sent me. I asked for a 5" with muffler. He told me I had to order 3.5 DP which I understand.......but he also charged for a Cat delete pipe (there are 2 extra pieces that are 3.5" WTF?? all they are is 3.5" strait pipes with clamps on one end. Im wondering what the heck this is supposed to do for me? I thought he was sending me a pipe that looked like a cat for legality reasons. I dont want to put this 3.5" crap on my truck when I payed $420.00 for a 5" exhaust. Please help me understand WTF he sent me!! and 3 pieces of the exhaust have dents in them including the muffler. Is this acceptable?