Even if you got 35" or bigger tires under there, do we even have aftermarket gear ratios?

When you see IFS trucks lifted really high, is that aftermarket component in the front a dropped crossmember to correct the angle of the axles? It's a shame because it ends up voiding a few inches of the lift. As does the transfer case drop.

Although I would personally never drop that kind of dough on the Xterra, I would be interested if anyone else did.