Thanks, Snorked. Many cast components evident: heads, block, compressor housing. Merc seems to use milled versions of all these. Emulation of the Merc layout was only a piece of the puzzle it seems. The devil remains in the details.
The connection between the post-filter intake and the electronics box atop the intake manifold--is this an intake sensor (pressure, flow, temp), or a cooling channel? If the latter, would air flow into it from remaining ram-air pressure post-filter or out from it due to low pressure pre-compressor?
Why hide the clutch?
VGT inside the runner collector seems likely given its shape. Permitting linear movement within its length. Nested between the three runners at the center of the aluminum collector plate (annotated image below) is a telltale linear hydraulic actuator body, anodized green and similar in size and design to their wastegate and BOV actuators. Total travel of the runners within would depend on telescope ratio. If 2:1, then travel equivalent to one bore-to-bore distance. 90mm or thereabouts. But it could be more (3:1, 4:1?) depending on how many concentric 'sleeves' the telescope has. Depends also on actuator and runner design. Elastic or baffled materials could be stretched to more extreme ratios, up to ~180mm within the volume shown, although the actuator looks sized for smaller travel.