Floppy drives and their right angle header with reversed key

[fabiodl]

Many floppy drives have a shrouded 34 pin connector with the notch on the bottom, as by attached picture.
However, all shrouded right angle 34 pin headers I find have the notch on the top
Have a look here for example.
Do you know any source / what I should look for?

[fabiodl]

Some drives have the notch in the PCB

but all the others seem to have that bottom notch on the shroud