Non-MkIII parts I can see are:
Front wheel
Front mudguard/fender (could be cut-down?)
Instrument housings
Lower yoke/triple tree
Handlebar switchgear, throttle, levers & brackets
Fuel tank
Left side cover
Airbox
Seat (Triumph)
Ignition switch housing
Exhaust system
Gear shift lever
However, the right hand crankcase does appear to be a MkIII item (but the left hand case may not be!)
Also, the headlamp brackets are fitted on the wrong sides, so they are upside down!

