New milestone: it's graduated to 2-seater status & I can take another person for a ride!
Moved 2 more batteries up front tonight. Need to temporarily re-cable things tomorrow, add another support to the forwardmost rack, and start work on securing all that lead so it doesn't fly around if the car takes a jolt.
Ivan says he wants to get his hands dirty next week, so perhaps we'll get the rear box built & installed by this time next week.