Yep, drop diff is awesome. Once you change out the cv's a couple times, it sounds even better. I really think that these help the strength of the axle when lifted also. The cv joint has the most strength when it is at no angle (no lift). The more you lift it, the more angle, the weaker it gets. So keeping that angle at a minimum is key to your axles surviving on large tires, I can testify to that.

The install is a lot of work, but its the same thing as changing out both cv's, so keep that in mind.

Andre, that Calmini crossmember looks real low to me. Did you try fitting it without the drop brackets?