Correct initial position for distributor
The photo below shows the FSM orientation of the distributor drive gear. The Rotor is directly in line with the slot so the rotor will point to the first intake manifold bolt on the driver's side. This will orientate the distributor so the vacuum advance canister clears the coil and oil pressure sending unit. The orientation of the rotor to the cap is not affected by the distributor location but by the positioning of the points.
The photo below shows the FSM orientation of the distributor drive gear. The Rotor is directly in line with the slot so the rotor will point to the first intake manifold bolt on the driver's side. This will orientate the distributor so the vacuum advance canister clears the coil and oil pressure sending unit. The orientation of the rotor to the cap is not affected by the distributor location but by the positioning of the points.