So..the unit arrived,with an 02 controller.
I spent a frustrating half hour trying to get the fuel tank off,as per the instructions only to realise it didn't need to come off.
I pivoted the tank forward,stuck a 6" high cardboard box that was lying around under the tank and worked my way around the changes.
All straightforward,as you'd expect.Only issues were the old/brittle electrical connections/plugs.
The bike started first time and ran perfect with the supplied map.
Smooth and smooooth all the way. Felt a bit more perky but it was only a quick shakedown ride.
I will get out on her asap for a longer blat and report back. Fingers are crossed.