Thanks Tony, I answered your PM but as I mentioned in it, I was trying to get the right answer for someone that asked me on another forum.
For my part I'm in the permanent quest to figure out how to do a 1"-2" drop on my Escalade. I know that belltech makes 2" front drop springs that I could probably put a 1" spacer in, and I think the H&R 2" rear springs might be best for the back. That seems the simplest solution although it involves mixing and matching parts from different manufacturers.