CV angles are definitely thrown off due to this kit, but at 2.5" of front leveling, it's generally not enough to cause long-term reliability problems. If you want to avoid all chances of trimming, we generally recommend a 33x11.50" tire. On the stock limited 22" wheels, that would be roughly a 285/50R22 or possibly a 295/50R22. Longer U-bolts are generally not required. As long as you're careful to equally install the U-bolts and U-bolt nuts, you should not have issues.