I have to agree with Les, Chinese is probably the easiest option.

However if you did want to fit The NX5 bodywork, the seat unit is too long, so need cutting at the front and will need some brackets to bolt it back to the sub frame. The front fairing needs new upper fairing stays to be made, and a bracket to extend the clock mount out to meet the fairing.

An alternative if you do want the RS250 look is to use Tyga a Performance stuff. I've got some, and it's a nice fit.