Will the rear leaf springs off of a pickup work on the Bronco? And if so, which trucks have springs that will work? Every Bronco I've seen at wrecking yards have the same sagging problem mine does. So I'm wondering if maybe taller 3/4 ton springs will work to give it a little lift too.

 

when you swap springs, you also have to swap the hangers on the frame. for example, the springs on a 2wd 86f150 are 21/2" wide. on a 4wd, they are 3" wide. the easiest way to find what will fit is to call a recycler to find out what years and models will interchange, or consult an interchange manual.
you could also have springs re-arched or replaced by a good truck repair or spring shop.