Removable shotgun seat
I have a novel contraption... I built a cut-out of 3/4 plywood that fits over the stairwell but has the door sweep cut out for emergency exit and driving with the door open. On that I mounted a threaded 2" galvanized pipe flange, and threaded a 7" section of pipe onto that, which threads into another flange mounted on the bottom of the middle seat from a middle bank from a Ford minivan. It folds down, and being the middle seat, didn't have a headrest, so it's lighter. When I need seating, or we're going for a long trip, we put in the shotgun seat over the stairs. It would seem to be a huge pain in the ass to get in and out of the bus when it's installed, but that really hasn't proved to be the case.
1981 Bluebird All American