Given that early R90S’s were made in the /6 era, this all looks period correct to me.
The /5 stator is a little different to the /6 in that it has a nice oval ‘Bosch’ plate affixed that became a boring and cheap sticker on later models.
/6 onwards also had the extra ‘Y’ tap lead on the stator body and a corresponding tab on the diode board that you seem to have.
The /5’s don’t have this.
Looks good and diode board and rotor checks are pretty straightforward with a multimeter.
I’m quite a fan of points ignition. Once set up accurately, it lasts for ages and doesn’t fail suddenly leaving you stranded.
The 8 teeth on your starter pinion and on the heavy flywheel look good to me too.
