I am not Chris G but I will toss some help your way anyway. There are full install instructions on All-Pro's website. On the longer front springs you have to remove your front spring hangers and install the All-Pro one, and on the back you need to put new spring mounts 5" (more or less) forward on the frame and move the rear ones 3" back. Vova has info about this too on his website.
The used front springs are the 1.5" longer style. To install these you will need to cut off your front spring hangers and replace them with the All Pro hanger or fab up your own hanger. I think DRM has some helpfull hits for making a new hanger on his site.
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