It's easier to align the dots that way
But it is firing #6 in that position.
So you can either install the distributor in with the rotor pointing at #6
Or rotate the crankshaft 1 turn
With both dots at 12 O'clock
and point the rotor at #1
Yeah worst case it pops and carries on when you try and start it, and you pull the dist and spin it 180 drop it back in and it fires. Its not meant to be difficult in a street application. For performance yes degree it. IMO.