in the service book it describes setting the cam pulley as such:
when installing the cam make sure the dowel pin is at the top of the camshaft.
Then it says to make sure the cam pulley letter "A" is aligned with the timing mark on the front housing. (there should be a knotch or pointer indicator made into the housing of the timing cover housing after you have everything installed and it should align with that ).
Now when installing the crank gear or aligning the crank timing mark the keyway will be at the 12 0'clock position which should allow the timing mark on the gear to align with the indicator indention on the tapered ring behind it. (i think those align anyway but the gear timing mark should align with a pointer casted into the timing housing cover).

Now when threading the timing belt try to have tension on all pulleys except for the tensioner side, then when setting the tensioner it says once you have the belt on to rotate the engine 2 rotations and then recheck the timing marks, if correct then tighten down the tensioner bolt once all is aligned and tension is set.

Now if you want to set or check the timing with a timing light there should be a mark on the crank pulley (not gear), it may be a small tick mark or knotch that will align with the timing scale on the timing cover. (you may have to clean off the edge of the pulley, find the mark and maybe take some white paint marker and re-mark it). In some of the older ones there will be a white mark and possibly a red mark, the white mark is setting TDC only. The red mark i have no information on but i'll assume it has something to do with advance timing. (edit: that red mark has to do with the 8deg timing advance).

Now for the distributor orientation:
the only thing it mentions on the positioning is to make a note of the position when removing but it goes on to say to make sure the engine is on TDC, the #1 piston up on TDC, and making sure the marks on the distributor housing, distributor gear and engine are aligned. I'm not satisified about this description but from my own experience the orientation of the rotor should be pointing towards the #1 journal on the distributor cap which should be at the 9 o'clock position or the front of the engine. It should be apparent when you install the distributor and aligning the rotor/gear related to the position on the caps #1 plug).


Hope this helps