SS springs amount of arch

Investigating E-body SS springs.
I see four part number pairs with the 20" front segment:
3412002 / 003
3690454 / 455
3690456 / 457
3690460 / 461
Which pairs have least amount of arch ?
Would like a "nice firm spring" without putting the rear sky high.
Rear tires will be 27.5~28.0 inches.

Might get more input on this over in the race and engine tech forum. Mucho many more drag racers with SS spring experience over there.

I might have answered my own question. All these springs have a different application
so they are not all equal choices anyway.

i put 456/457 springs on my 67 coronet. the SS springs had about the same free arch as the 318 factory springs. but they are a stiffer spring so they have more arch with the weight of the vehicle on them, the 318 springs were about perfectly flat at rest.