Update on my earlier question.
I have since determined that the engine is a Mazda diesel 2977cc (3.0 Liter) model HA.
The head gasket is available without purchase of the complete overhaul set.
However, I still lack the Torque values and sequence. There is a possibility that these might be TTY or torque to yield which would also require that value/angle. I have the part number for the 11 head bolts if they require replacement. So far I have found nothing to indicate that these are TTY bolts.

If anyone has a repair manual or access to further top end repairs, then please let me know what info you have.

Thanks.

Steve