u/SwitchItUp84

Does any one know if the exhaust system is different. like could I take the 04s and put it on the 04.5? I'm pretty sure the only real difference between them is internals and computer. I'm looking for a turbo back kit, as my exhaust has literally fallen off. I can only find cat back for the 04.5-07 but they sell full kits for the 03-04. Thank you for any help.