I brought my car into a shop the other day and while it was on the lift I got a good look at the downpipes/turbos. Some of the bolts look pretty difficult to get to, and without air, will be a b*tch to get loose to begin with. They said they would charge me two hours labor to get the job done. Having done a single downpipe before and it taking me almost 4 hours, I am inclined to let them do it. Any issues you have will be with removing the stock pipes though. The catless PPE pipes leave MUCH more clearance when bolting everything back up.