What kind of setup is this???

I'm sure you've all probably seen this one before but it's new to me. What kind of setup is this guy running here? I've never seen a slant set up like this before. Course, I've only been interested in them for about 10 months now, so I'm sure there's all kinds of setups I've never seen before. Thanks!

[ame="http://www.youtube.com/watch?v=3GC0W11UFu8&feature=related"]YouTube - ‪Slant 6‬‏[/ame]