I'd like to hear Rallytwit's take on the leaf spring thing, since he's had a racing 1200 for a while, and had good luck with the suspension which uses 280zx / wilwood calipers on the front and has leaf springs in the rear.
I think his car has a reversed leaf. ( I don't know how or which one ) I know nothing about these crazy leafsprings.
I've gotten the impression the leafsprings are a better setup than the 4 link in some cases.