I want to run true duals. Gt-takeoffs seems like the option to go. As I understand it the y pipe will have to be cut in order for it to work properly. I would also like to buy Magnaflows, or Flowmaster Mufflers to replace the GT's stock ones. Are there any other parts I would need to convert to this dual exhaust system. I will probably have a shop install them anyway. Will my rear need to be altered or can the pipes hang underneath my 7.5 body. im getting frustrated because the "performance" shop I went to tried to BS me, and he ended up telling me they couldnt install the gt takeoffs due to legality. Not many good shops close by >.<. im gonna try meineke soon.