Group 2, steps 37 till 44.
Exhaust manifold and engine block placement:
Preparation and installation of radiator:
Airbox intake and exhaust pre-mufflers:
The engine block is assembled step by step. Several steps are detailed in the drawings in the manual, as quite a few tubes and hoses each have their own specific route along and within the engine block.
I won't show all the steps, but I will show these. In the last drawing of step 44, I've placed an arrow at two metal band clamps.
It took quite a bit of effort to attach these:

A hose is attached to a frame crossmember with two of these clamps. To properly secure the clamp, the end had to be routed through one opening, then back through the other opening. And then fold and take back, with a metal strip ...

But I managed it again.
The drawings were sometimes a bit too detailed to find the correct route along the engine block. The routing was almost completely gone. I gratefully used two photos of the engine that I had already found while searching online:
The engine is quite impressive:

On Dean's advice,
@Dean62, I tinted most of the bolt heads. I sprayed the intake airbox and the intake pipes. Not that they've discolored due to the heat, but it looks a little different. I gave the outer radiator lines a very light wash so the black is just a bit gone.
The exhaust manifold has discolored considerably due to the many rides during which the journalists thoroughly tested the engine:

The two pre-mufflers for the exhaust cool the fumes nicely.
The exhaust manifolds are just visible:

Not everything will be visible later, but it was fun to do, just like with the exhaust on my last Duc.
This is the current standing at the end of group 2:

More parts will be added to and on the engine later.
I've used 132 parts and 96 bolts in this group.
So far, 292 parts and 265 bolts.
Regards, Peter