filler neck modification

On my '65 Valiant the fill neck is vented in the trunk. Not TO the trunk, but in it. There is a tiny metal tube that goes thru a second hole in the trunk floor filler seal. It has a rubber hose at the fill neck near the fill end that bridges from the fill neck to the tube. It was one of the first things that I replaced on the car.

Interesting thoughts on blocking some of the air flow so that it's more forced to act against the end the filler rather than just allowing free air flow thru the bellows seal on the filler. All modern cars have the fill neck cap's seal at an angle of about 45° I've been thinking about doing something like Hollywood's deal, but bring the fill neck up to a flip-lid box (sealed with a drain to the outside) that is near the trunk lid gasket. Open the trunk, flip the lid, remove the cap to fill. Route the filler neck first down to the trunk floor and then across it. I don't think that I could go thru the floor further outboard w/o having to punch a large hole thru the 'frame' to reach the fill port in the tank.
I suppose that one could go under the 'frame' piece and into the tank near the bottom IF the original fill hole was plugged with something that had a large vent hose attached to it and the fill neck near the cap flange. This hose could not have a low spot in it or it will "p-trap" with gasoline and stop further filling.