I'm puttin an offroad dp on my prix and i'm not going to lie, the 12 years of rust on those bolts look like they are going to be a ***** to pull off. secondly, when i go to swap out my mufflers, am i going to have to cut them off or are the mufflers clamped on? any advice on how to ease the process would be great, i spent 2 hours just pulling off the old exhaust tips and replacing them with new ones. Thanks