If you can get piston #1 at TDC on the compression stroke with both it's valves fully closed and have the distributor drive gear with the slot in it running 1 to 7 o'clock with the 'big half' on the right hand side of the slot (
pictured)....the rotor will point at the spark plug wire for spark plug #1 which would be at approx. 7 o'clock in the distributor cap.
But if if the distributor drive gear was not installed as I just described, unless you want to go thru the act of resetting it, the main thing you need to do is put the spark plug wire for # 1 in the distributor cap wherever the rotor is pointing when #1 piston is at TDC with both valves completely closed. and then proceed from there arranging the spark plug wires in the cap in proper firing order 1 5 3 6 2 4 in a counterclockwise direction.
It may look odd but it'll work.
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