"it only shows off the skill of the craftsman and is not faithful to the original design / concept."
Martin,
You have indeed missed the point! "ONLY"??? This is superlative skill in fitting and machining being demonstrated to you and I suggest that there are very, very, few members of this Forum who could emulate him.
That the clip ends with the engine mounted on a plinth strongly suggests that it was never intended to be anything other than a display piece and an excellent one at that.
Just appreciate it for what it is; a miniature work of a machinist's brilliance.
By the way, can anyone identify the background music?
Barry M