The engine was dug out from 10m deep in the ground
I've seen this before and it is incorrect. I was at the crash site within 10 minutes of DBB going in and as I said in a previous post the engine was lying on it's side, perhaps 10 to 15 metres from the main wreckage.
Never, ever, ever, do anything unplanned in or with an aeroplane at low level
Mr. Bushe actually spun it in from around 4000'.
The other Mustang that crashed at around the same time was VH-IVI (A68-119). Ray Whitbread and the aircraft came down in the Windsor area on June 11th 1973.