Looking forward to seeing more pictures of this car to get a better idea of how it goes together.
Like the look of the sliding caster plates (is that a good way to describe the inner upper suspension mount design?) Caster is one of my favourite tuning tools, and it looks quick to make changes. Not sure about it as a rear end adjustment though, maybe interacts with ars system somehow?
The over/underdrive possibility is fascinating too. If that's part of its design based on using two different size spur gears, how will correct gear mesh of both spur gears be accomplished? (maybe only a limited range, and only very slightly over/underdriven.)
Is droop adjustment made using grubscrews going up through the chassis at the outer edge?
Is the layshaft bulkhead arrangement actually a one piece assembly incorporating both layshafts and the motor mount piece, using only two screws to mount to the chassis down the centreline? (would love to see a pic without the spurs and motor in the car.)
Can't wait to learn more about this machine (and maybe learn my first thoughts about it were completely wrong!), even though my brain hurts already!