Ill confirm the wire colours , definitely on a turned up adaptor backing plate.
coil is grey with "made in Japan "on it so it could well be k/h/y / suz!
No tensioner and the clutch is a full billet aluminium job, very nicely machined, and petty unmarked.
I haven't had a timing light on it so don't know about advance.
The motor is pulled down awaiting top end refreshments..