Ok, maybe I can get some good info from you guys on here, but this is what Im looking for. Im not into the whole racing thing or my truck being super fast. I want to put an exhaust system on here that sounds GREAT and is AFFORDABLE! I like the whole stack thing and I found a video on you tube that a guy put 5" from Turbo back into 7" Grandrock stacks. His truck sounded Awesome! I know that I want to do a DPF delete, but give me some input on what sounds good! I love the loud diesel sound! This is my first diesel and I have a lot to learn. Also trying to make it easy to change over for emissions testing that once a year thing when it happens!