I just purchased this 1990 K100 this past weekend out in West Texas. I haven't decided whether I'm going the cafe racer or scrambler route but first thing's first I gotta get her running.
Issues so far include: dead battery (want to replace with a sealed lead acid so I can tuck it under the seat pan if I go cafe), totally gunked fuel system (most likely due to ethanol fuel sitting in the lines for over 3 years in a garage in Texas...hot, hot, hot)
Here are some pics, I'll be adding more as I make a decision and continue on...
Thanks for looking!
-RetroTexan