So in short, for the back wheel:
10mm off the sprocket carrier
15mm off the caliper carrier
(Ditch both XT spacers between the wheel and swingarm)
Procure 7mm deep spacer, 17mm ID (29mm OD)
Re-use Skorpion spindle
And that's about it I think?
Sprocket is in same place as Skorpion, and I have a rear brake coming from Ebay. I am going to give the old chain a going over (a few gubbed links) but will use it for initial test.
Of course, I need to work out the offset for the new rim. It needs to be about 10mm over to the right from where it is now, but I will measure up and get Hagon to build up a new wheel, (with stainless spokes, blast and paint hub) to hopefully match the front rim.
But thats not such a problem. It can absolutely can be done, and if you are daft enough to waste time and money then its far from impossible. Helped hugely I think by the fact that the swingarm is FZR Yamaha, both the MZ and XT (and presumably FZR) are 17mm spindles, and these guys dont change anything across the range that they dont absolutely have to.
Next: rear brake (bolt on and bleed), chain soak, clean, and replace (note to self- how many teeth on rear sprocket?) then start to build up the bits onto the handlebars to get it somewhat rideable.
Wheel build, road tyre.... done?
I am going to re-use the old pipe and bodywork for now, and as soon as I can, see if I can get it tested as being ULEZ compliant... fingers crossed.
Cheers for now, will post a few more pics when its looking a bit more complete
Andy