Global West sells spacers that go under the rear driver's side coil spring to pick that corner up. Sounds like a good idea, but my results were less than pleasing. It did not really even things out, but just picked the whole she-bang up higher. The passenger side remained higher than the driver's side, and it just gave me a funky (or funkier) tilt. I'm thinking maybe Granatelli lower control arms with the adjustable spring perches might allow me to both raise one side and lower the other, and really force a shift on the rear suspension. But I also know for sure that mine results from a tweaked unibody, having had it crunched a couple of times (through no particular fault of my own).