I have a 2016 Sprinter 170" high roof. It did not come with factory roof rails. I'd like to add them, but I'm wondering if it can be done without removing the headliner? If not, how difficult is it to remove and then re-install? Thanks for any tips.
Do you have a full headliner or just over the cab? If the former you will need to remove it. If the latter you will need to remove the styrofoam blocks (if installed) just behind the corners to access the most forward stud/nut.
The headliner is not difficult to remove and reinstall if you follow the Orton DIY steps in this forum.