Oldroadie, when I was in the market for the New Speedmaster I liked the look of these two. I'm sure they could be made adaptable for the NSM. http://www.nationalcycle.com/streetshield-hd.html

I also had an eye on these handlebars. https://www.baakmotocyclettes.com/en/hom...d/diameter-22mm

Or some risers might be an option.

It's not speeding till you get pulled over.
https://www.youtube.com/watch?v=Bqa1s4jhkQ8