Dumb seatbelt question.

Ok, some my interior has been apart for some time, and today i'm reinstalling the carpet, console, seatbelts, etc.

Which way do the seat belts go on a 68 Dart.
Does the buckle side go on the inside bolted to the tunnel, and the buckle insert on the outer side, mounted to the rocker, Or the other way around.

Obviously the belt will work either way, I just cant remember which way they go.