[Ed in Maine]

I want to add some assist straps in the back seat. The interior is installed in the car. The top of the strap mounts about level with the quarter window with two screws. I have probed in the area with an awl to locate the two wood screws but I keep running into steel brackets. Does anyone have a picture showing the upper pillar area so that I can avoid the steel brackets? I don't want to make a mistake and damage the upholstery. Thank you, Ed