Fujimi really did a lousy work on the engine and the engine bay, only 3 to 4 parts totally for the engine (of course it is already much better than the curbside ones...)
The LP560-4 engine bay is basically a redesign of the V12 engine, placements and shapes of the components are quite different from the predecessor...
The new LP560-4:
Since the placement and arrangment of the engine bay components are quite different between the 2, so some rebuild should be unavoidable:
Based on the old one, cut it into 2 and reshape the cylinder covers:
Then I had to finish the engine compartment cover ...