You just click the little yellow tutle logo in the upper right corner, click on suspension, then springs and find the info right there
Rear Springs are longer than stock and will require relocation of the spring hangers. On 1979-1988 trucks new hangers will be needed 6" forward of the stock ones and the rear shackle mounts will need to be cut off and moved back 2". On 1989-1995 trucks the new front hangers will need to be installed 5" forward of the stock units. When measuring the position of of the hangers, measure from the center of the stock spring mount to the center of the new mount, along the frame. Rear spring rate is 220 in-lbs
