barracuda rear floor removal

Assume 67-9 fastback - you could try to remove the rear hatch and the bolts that fasten the rear sub floor to the floor, After doing that you may be able to wedge the sub floor up to give you space to remove the filler tube. Otherwise you'll need to remove the rear seat back 4 bolts and the remaining attaching sub floor screws/bolts and slide it away. worse case you'll need to remove the side panels in the cargo area.