I think the picture does it all.. Good to see another Japanese company keeping the NSR alive. Do you think the single Suzuka style headlight mounted to the front guard would pass a RWC in Australa? http://www.t2racing.net/scot-mc28-1
With the 250cc class being reintroduced back into the IOM classic TT there should be renewed interest in spares for the smaller bikes. This year was won by RS250.
Hopefully Honda will put some parts like chain guides and inlet manifolds into production again. Fortunately, many parts from the RS250 Well I believe the tail on this bike is off an RS125, but they may have modified the end of it. The front cowl looks to very closely resemble an RS125 as well. The fact that the body work is shaped around the pipes makes me think it's all custom though. You're right though, if it wasn't for the fact the Honda RS's have their driveline on the opposite side it would be difficult to tell!