It was in good condition, “just” the piston rings needed to be renewed
Nowadays it is the same engine as Kohler/Lombardini 25LD330-2 and it is a 650 cc version of the 850 cc version Ruggerini MD191/Lombardini 25LD425-2.
These engines have the same mountplate shape at the output shaft as the the original Enfield Taurus 6LD325 engine, so it fits nicely to the Taurus inner primary chain case.
That is, no need for an adapter plate between engine and inner primary chain case WHEN using the long Enfield gearbox diesel mainshaft version !
The big challenge is always to align the engine to clutch and to achieve adequate “round-the-engine” clearence.
The following pictures show my mounting fixtures between engine and gearbox, engine and downtube, enginehead and frame..