Firing directions depends on the box. If your building a wedge like box to fit to the contour of the seat I'd say fire to the side. If your building it another way fire it into the seat if you have the room.i would but its over 2 hours awayill just wait until it comes back.
for the people with a s10 or single cab for that matter wheres the best port direction i thought about firing it to the side is that a good idea?