I called Valley Spring Works today (finally) and spoke to Bill, who is a really nice guy. I placed an order for new rear springs for my VX. They will be 2" shorter than stock, and about 20% stiffer. The cost was $205 + shipping to Miami. I forgot to ask about lead time. I'll probably call agian tomorrow. Anyhow, I'll let you all know when I get them in.
Also, I will need some help from someone who's got experience with adjusting the torsion bars up front. I think I'll try cranking the front down about 1" at first to see how that works out for me before exploring other options.
Now then... I've got my new 29" mudders on there with a high negative offset (WIDE stance) and stiff Bilsteins. With this 2" drop and stiffer springs, my VX should be a rallycross beast! I can't wait!