Thanks everyone for your suggestions.
No problems working on the mechanicals, I am an engineer and have always worked on my own bikes with only a little help with electrics which are the work of the devil.
I have not seen the bike in the flesh as its at the other end of the Island but looks OK in the pictures. May need the headers rechromed, paint has a few chips but mostly complete and original and includes some spares.
Was looking at bringing a pre-80s round head in from the the States but would need to find one as nice for $4700 usd or less because of the cost of freight, tax and compliance and still wouldn't know what I was getting until it turned up.
More suggestions gratefully accepted.