This is the Oscillation Overthruster from the 1984 film, The Adventures of Buckaroo Banzai Across the 8th Dimension!
This is one model I've worked long and hard on. It's a VERY difficult model due to all the complex angles and shapes involved. But this is a very good approximation of the Overthruster and was modeled to scale from a prop replica so it should be the correct size as well.
As of March 2016, the Oscillation Overthruster is printable! I added four new STL files: The main body, the extra parts for the other side, and brass and black trim pieces. I printed these (very colorfully) so you can see which piece goes where. I'll soon print them in silver, gold, and black for a more accurate look. But we're really getting somewhere!
Please comment and let me know what you think and if you're able to do anything more with it.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/hb3H8fYMPKC