I remember building the Visible V-8 engine when I was a kid and must confess it was above my skill level. Got it assembled but it would work itself apart when I tried to operate the motor to see its parts in motion. Perhaps this one is a better engineered kit. Looks interesting and I can only imagine some of the detail you more experienced folks would add to it - maybe even LED tipped spark plugs and aluminum intake trumpets! Enjoy!

http://silodrome.com/porsche-flat-6-engine-scale-model/