So, I got it today. Not as scary as I thought: Its all there exept the side covers & kick start lever.
Sleeved barrel is on a small oversize.
All of the rocker bearings and the shock are trashed - this is the scariest bit.
Forks are excellent.
Seat recently recovered.
Plastics are painted.
Etc.
In other news, the KDX175 frame that also turned up today is a cracker, with excellent side panel and rear guard. This has re-sparked my interest in the KDX175, and killed off the idea of combining it with te KX125.
So the KX is another project bike...
(GMC: I know, I know....).