The BMW donor engine is out and on the stand
The M40B18 is 600mm wide from the air-conditioning compressor to the opposite edge of the sump.
The width inside the chassis rails is 667mm by my tape measure.
The sump is offset to the left which is good as it will allow clearance of the front driveshaft but it's going to be close so like the original installation the engine will require an offset to the LHS of the chassis.
If I can get away with keeping the air-conditioning compressor I will use it as an air compressor. If there isn't enough room it will be removed.
Flywheel is thick and heavy.
I'm looking at the clutch and pressure plate issues today.