Hey that's my mota!!
The NF mission does sort of fit the NSR. As Andy says, there's an F3 shaft that's necessary and because I didn't have a spare I decided on the full RS mission and clutch conversion, Simply a case of doing the welding as you can see in the picture to the RS cover and fitting the complete RS mission, primary gears and clutch. Notice there's no water pump as I like to go the electric pump these days. A few other things to do, but not that tricky
Gotta love Honda