Yes, the station wagon gas tank. Where to put it? Where to put the spare tire? I see no way of obtaining a replacement and no easy way to put a pump in the tank.

I would use an external pump situated under the vehicle right under the tank. There would nearly always be a little pressure on the inlet side of the pump after you got the siphon started. The pump should be pretty happy with this arrangement. Try to keep away from exhaust components. If it cannot be avoided, then use a shield to block the radiant energy being emitted by the exhaust. I had an external pump vapor lock because air went over the exhaust pipe and then heated up my fuel pump. One shield and two feet of polyfoam tubing insulation fixed that.

R.