I looked at my old clutch and FSM and I admit I am not sure.
Two things to look at
1) the rivet to lining distance is normally higher on the flywheel side on an OEM clutch disc, you may need a depth gauge to tell on an un-worn disc.
2) normally the sticking out piece of the hub will not go into the flywheel dish, so it goes into the pressure plate. Try it.
Hope this helps and maybe someone knows for sure.
the clutch sometimes says "out" on it somewhere. but if not, looking at the clutch from the side. you will see one side sticks out and the other dont. the side that sticks out will go towards you as you assemble it. some are made a lil different and hard to tell.