It doesn't really matter where #1 is located unless you're a purist looking for an exact reproduction. It can easily be changed to the 1:00 o'clock position by finding #1 TDC on the compression stroke using any of the methods described above, then pull your dizzy out, turn the rotor so that it points to where you want it, put it back in, then put the cap on and change the wires so that the #1 plug wire is right over the rotor, then follow the firing order around in a clockwise direction.