battery box and tail stuff - and ball&pivot fittings

Quick photo update here.

My new battery box - drawing:
Battery box layout:
New battery location:
New tail bodywork and seat mount:
obviously in development. this is round 2 of 3. I'll be bending up the final version tomorrow. Won't need such a large access cutout on the new version.
The new lines/style - showcase that frame:

last but not least, the ball and pivot u-joint things:
the one on the right is what I want a beefier version of. see the one on my brake setup below:
short version of my new shift linkage. the rod is not threaded and is tapped instead.

-S