I built that same kit, although much cleaner than he's doing it, and of course without the scratchbuilt wiring...his makes mine look like a totally different kit.
I love that full interior...you have to display at as a full cutaway to get the full effect of all the detail available though. They allow you to build it either as a cutaway or as a full exterior...but why would you want to hide all that neat little detail/work from open view?