Hey there, I have a 05 6.0 its pretty much stock other then a magnaflow exhaust and k&n intake set up, I do have a tuner but don't keep it tuned just drive on stock, I been kicking around the idea of replacing the turbo down pipe with the diamond eye 3.5 kit with the cat delete pipe, is it really worth the time and money to do this ? Or just replace the cat with a straight pipe ? I heard its a pain in the ass to take the down pipe off , the motor was completely overhauled prior before I got it, but the owner replace everything with oem I don't know why he didn't stud it , it's my daily driver and I pull a little flat bed with my rhino occasionally, thanks