amuse front and rear bumper is not plug and play option
i am not sure for the real amuse from japan, but for the one from aerojacket and Shine, Fitment is not guaranteed, and you have to drill hole by yourself
alignment take time (or money if you let bodyshop do it)
cons: cost 1100 (800+350$ paint if you do it on your own),cost time and effort.
pro: look freaking good, your car is unique because nobody have it
i have to admit OEM nismo bumper is cool also, you can save your time and money by using OEM nismo bumper