No idea what is the top bottom front back? or which way air hose points?

 

Tube should be on passenger side facing backwards if I remember right it has been a long time. Just make sure the tube is on same side as the hot air tubing that goes down too it and if you're not using the emissions pipe it doesn't matter. Funny I have two copper repair tubes in the bottom of my toolbox but none of the rubber hose that connects it.