These springs are designed for use on a Fox Body that hasn't been extensively lightened up.. There is no spec on this spring, it was designed for use in a Stock / Super Stock car that can not use Coil over springs and struts.
28 Spline traction lock with NEW Ford clutches and steals, new carrier bearings, FRPP 4:10 gears.. $200.. Sorry but the Axels in the picture are no longer available. Thx, JV