I am in the market for a LBZ. After doing some reading and researching...I am aware that anything after the LBZ will be very hard to delete because I would have to find a tuner that would make a "race" tune for it. This is the reason why I am looking for a LBZ instead, and let's not forget all the great things I read about it either. My question is: can I put a turbo back exhaust on a LBZ with no tune? If not, can I put a cat back exhaust on with no tune? All I keep reading is basically good luck trying to find someone to do a tune for a delete. I could care less about rolling coal I just want the enhanced sound to hear the turbo whistle! Thanks for any input/advice in advance and if my take is wrong on the 07.5-10 let me know so I can expand my buying options!