I’m a bit late to conversation here but I tested it and was able to export a narrow vertical veiwport…this was as narrow as SU would let me go. Then export as EPS and open in Illustrator in order to further control the lineweight. You can see from the zoom in that the detail is preserved since it’s vector. Does that help?
Edit - you can further narrow the dimensions by adjusting the artboard size in Illustrator.
