differences in stock rear 1/2 ton springs?

[moturbopar]

Hi all, I am trying to find some info on which rear springs I should run. the choices are the factory 79 springs which have 5 springs and the others are from a 86 chevy 1/2 ton pickup it has 4 springs and plastic buttons . This is going into a 79 blazer and allready has the shacle flip. I am trying to find out which of these springs would give more articulation.
thanks

 

[blackblazer717]

well each spring in the 4 leaf pack is stiffer, and i take its a 4 leaf with an override, or a 3 leaf with an over ride... well i would go with the 5 leaf its a 4 with an over ride....im assuming each spring in the pack is less stiff.