Message: i've got a '00 dak. 4.7 4x4 ext cab.I want to put a new exhaust on it.I will probably go with flowmaster exhaust kit, part #flo-17278 (pipe and muffler)My question is,the muffler they're supplying is the force II , is it any good or should i go with another kind of muffler?(40 or 50 series) any help???????????