Yup brand spanker!
Got it today, ebay number 270740427955.
Part number is 030103265BX which i believe is for an NZ engine which is a 1.3 IIRC.
I'll just swap the exhaust valves over and lap them in.
If it turns out to be a 1.0 litre head then i have cocked up however the seller is ok for it to be returned if it is wrong.
the exhausts and inlets are different on a g40 (not by much but diff part number on the inlets and slightly longer). personally i'd get a machine shop to cut them in