Tin joek jau ching
Honda CBX? Only 4 cylinders and 650cc's short. That's a Honda CB400N Superdream (twin disc) Sorry, it reminded me of this /vehicle_488966-Honda-CBX.html
I can understand where you're coming from, that bike has been misnamed as 2 different models, both are wrong.
Suzuki GSX400S http://www.bikez.com/pictures/suzuki/1987/gsx%20400%20s.jpg
Replaces the NSR:
could be merged, as it is just another NSR 250 R .