I know how but i dont think you will wanna
After you get off the cross bars off you will have to take out your headliner and unbolt the runners. Even after you have gotter the runners off you still have a few holes that will cost alot to fill. The rubber runners are like 80 bucks a peice and the hole fillers cost like 40 bucks a peice. You are looking at a total of about 400 bucks. (chair)