Leafspring suspension handling

[hidollartoys]

I am building a 1973 duster with rear leafsprings and front torsion bars. I will be using this car for track days and crapcan road racing so i am forced to stay with the "stock" suspension. I am trying to find some info on how to get this car to handle but 99.9% of these were/are set up to drag race... not much use on a road course. Any advice or a point in the right direction would be greatly appericated.

THANKS in advance of your help.