A few members have commented on this bike that I'm not sure I have posted.
@Landofnone has something similar: http://www.bikeforums.net/classic-vi...d-up-time.html
@J.Oxley also has triple triangle Shogun: http://www.bikeforums.net/classic-vi...-triangle.html
@-holiday76 facilitated this for me in late 2014. (Thanks, Big guy!) I built it up over the holidays in 2014, but I'm more-or-less done tinkering. I can't think of anything I want to change. I've ridden about 3000 miles on it so far.

The serial number on this is M5L63485, and I suppose that makes it a 1986 model year.
It has a "Made in Japan" sticker above the bottom bracket on the seat tube.

The fonts used on this thing are crazy cool in a 1980s sort of sci-fi way.