Today I started installing the 5th-point harness brackets. The kit from Vans is for the 7/9 and does not fit the 6. I had to cut one flange off of each bracket and rivet on some angle to match the width of the seat ribs. It sounds easy, but it is a tight area to work leaned over the side of the fuse and a general paint in the neck (and back..haha).
