57\" Ford Springs w/ 8d shims Sac-CA $60 for springs and Rubicon Express STEEL (not forged, not aluminum) 8 degree shims ($40 w/o shims). These are the five leaf (including overload) from a '91 Ford 250 - I think. I drilled a hole 1 1/8" back. My rear tires lined up great in the wheel well on my Blazer with a shackle flip. These are too soft for me , so I got 1 ton chevy springs.