IIRC the SS springs have "softer" rates than some of the HD springs so they "give" and react in a controlled manner.A lot of it was built in the shorter stiffer front section not allowing the axle as much windup. Yes around 2800 is OK for that rating (give or take a little) If it is closer to 3000-3200 use the higher LB rating.
Again, I am no expert and have not used espo springs.
FWIW I have some severe wheelhop issues with my street tired 440 sixpack 4 speed e body (HD springs /pinion snubber)Is Ok with the snubber, but when I take the snubber off all hell breaks loose.Am considering Cal-Tracs as the best solution but even calvert has his own springs...