Whoa, a faux cop bike?!
Is that permissible in this locale? Say it isn't so!
Thinking....Why when I were young, me and me gang of hooligan's, (aka The Hill Gang) would have one (make one) of these. Then scream those sirens and flash those red bubblers on the outskirts of town.
All for the sake of showing off!
Wonder what drives us to do such wrongful and foolish things?
Anywho...it would be a no-no back then and still a no-no today to construct a faux cop-scoot.
SO....DON'T EVEN THINK ABOUT IT!!
However, an attached windscreen onto your stock screen might work

isn't that what we see in the pics above?