Hello flectalux,
welcome at Stridaforum 
I personally do not remember a modification like above mentioned.
Most likely will the dynamo hub be too wide and you’d need at least a custom made axle.
Strida hubs, especially the front ones, are unusual narrow;
- the dynamo hub will be to wide I’m afraid of.
Moreover that will be some kind of adapter required for the connecting of the brake mount.
Here’s another method, clean install is feasible, but it seems that there are no custom parts necessary:
Dynamo lighting system on a Strida
Kind regards,
Chris