Good question. The only reason I can think of is to keep it original?
They had completely removed them from the boat when it was apart and reinstalled them.
As for the pickup being in the front, it would depend on the baffling and if there was a tube that moved as the boat moved. Old tanks had weird designs inside to keep the pickup itself in the fuel. You have to think of all the things the boat goes through, and what the fuel is doing as the boat accelerates, slows, turns, goes over waves, etc.