I think I have decided I am going to switch over from my Flowmaster American Thunder catback to some MAC mufflers. My catback came with the delta 40's so they are a bit quiet for me. Got a couple of questions, #1 is the MAC flowpaths the only mufflers that MAC makes? #2 How much louder will the flowpaths be then the delta 40's I have now. #3 The american thunder catback was a 2.5" system if I get 2.5" flowpath mufflers will they weld right up? #4 I've also heard the MAC flowpaths have a much more aggressive nasty tone to them can anybody elaborate? #4 Where is the cheapest place to buy the MAC flowpaths? #5 Do I want offset in/center out or center in/center out?