WindyDrew -- When you get sufficient posts, put up some pics. Maybe in your own thread. I would like to see what your direction is. There are tadpole threads in progress, have you seen them?
NeilBlanchard -- Further to the Austin 1800; here's the same suspension geometry rendered in Volkswagen parts:
I like the tetrahedronal rocker arms, but if they were asymetrical the coilovers could reach past each other. Another possibility would be a [splined] deDion solid axle, with Watts linkage/4-bars carried by the firewall bulkhead:
