I spent Saturday tearing apart the rear end of the bike. Removed the bodywork, relocated the regulator/rectifier and ECU, painted the coolant tank and trimmed off some tabs and about 2" at the end of the frame, as well as part of the inner fender, then fabbed a taillight mount and turn signal mounts, and here we are:
I still have to clean up the underside of the seat, probably with an aluminum plate, and trim the front fender a little.
Here's how I trimmed the rear fender, so we could retain the original tool tray and seat latch springs, and protect the battery and seat from road spray:
Total weight savings: 27 lbs!
Later, I also trimmed the front fender for a more traditional profile:
