56\" or 57\" springs and big @$$ axles? I have a Dana 70 dually rear end. It just so happens that it is the perfect width for my Blazer, both spring perches and wheel mounting surface wise. Now, recently, I have been reading a lot about putting the 56" Chevy and 57" Ford springs in back there. The springs I have now are 52" Chevy 4" lift springs and have no problem controlling this beast of an axle with 37" SSR's, but, how would the 56" Chevy springs do? Not much worse I guess. But I would really like to know how the 57" springs would do seeing as they are much softer. Also, what would I have to do, if I wanted either the 56" or 57" springs with a 4" lift? The lift being in the springs that is.