Many thanks for all the feedback,especially Rob Davies offer.
Starter for M16 engine is different to T16(M16 has a two bolt flange, not three).
Original issue was that starter jammed engaged and subsequently became very hot before I could get battery disconnected.
I have removed the starter and had it checked over by auto electrician, other than signs of excessive heat, there was no apparent damage to the windings and insulation.
Reinstalled and all seems ok now.
My main concern as I expressed earlier was the complete lack of available parts here in Australia as this engine (M16) did not come to Aussie in any production vehicle, and if parts were required I would have to source from UK- I was just trying to get ahead of the game if a rebuild/parts were needed, or source a complete new one.
Again, many thanks.
Ross