Craftsman 32CC Bushwacker

I inherited a Craftsman Bushwacker that was originally bought in 1987. It’s in like new condition with the exception of the fuel line. Nothing left of the as they have crumbled to nothing. My question is there are 2 holes in the BOTTOM of the tank. I see from videos I’ve watched that the small on is the filter and the large on is for the pressure line fitting . Where do I position the pressure line fitting ? At the bottom of the tank? Should it be submerged in the fuel or sucking air at the top. All the videos I see for newer tanks show the lines coming in from the top, not the bottom.