I am a newbie and took the top off my 1977 FJ40 today. It took awhile, and it was obvious the top had never been off in 28 years. I only have one item remaining ... where does one bolt the front seat belts? My FJ40 has a factory roll bar. Should the V-shaped holder bolt into one of the roll bar bolts and the belt "case/retractor" bolt somehow to the tub?