IIRC ... Intrax Springs are the lowest getting you 3" lower once they settle ... Plus they got a nice ride to them if mounted on some good struts like GR-2 or AGXs. As far as price and where to buy ... Just google it!
You could also look into H&R Springs ... I think they're very similar to the Intrax Springs.
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2008 Chevrolet Silverado 1500 LT1 Z71/4x4
2000 Oldsmobile Alero GLS - Sold
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