The Heritage certificate arrived today.
Date of build 21 August 1972 - so no road tax - hooray!
Engine number MG57435E - so it was a 6 cylinder PI and subsequently converted with a Stag engine.
Destination - GKN and Company - so were they responsible for the FF system ?
All the other details match, auto gearbox, PAS, estate etc. Just need to check the gearbox number when that gets removed to see if it remains the same.