Nope, the front diff is a little over an inch higher than the rear and still another 1/2 inch or so higher than the crossmember directy behind it.

Due to the design and geometry of IFS, when the torsion bars are cranked, the center of travel in the front suspension is moved upward thereby achieving "lift". The side effect of this is that you are using most of your downward travel to achieve this "lift". The front diff and crossmember will move up with this procedure as well, increasing the difference between the front and rear even more.

It would be safe to say that dropping the front diff 1.5" to ease the stress on the CV's would make a negligible amount of decrease to ground clearance if any at all.