Modified car color temperature should not exceed 6000K, preferably 4300K, practical, penetrating power.
A double light lens is a must, more spotlight, after the change you will love the night.
Foreign country regulations are modified must be retrofitted with lenses and headlight cleaning device. The cleaning device is not good DIY, good thing now more no one cares about this, you do not need to add.
Suggested lenses, Dr. AL (Koito is not good in the headlamps) bulbs, imported D2S Philips 4300K ballast, Denso or Panasonic