The backing board isn't too bad to remove from the car, but usually is very brittle. just remove the the plastic trims, grab handles, and the trim fasteners, seat belts. Let the board rest on the front seats and then remove through the tailgate very slowly. once you have it out you can use a heat gun to peel off the old material. Then scrub the backing board down with a brillo pad to remove the old adhesive. Now you're set to put on fabric, vinyl, etc.
