The sunline kit is the most common lip kit that is copied out there. Everyone makes it. Save your money by getting a rep especially if you will hack it to fit your '13 but if your heart is set on it, get it from Sunline Racing or the other two I mentioned above.
Here is their site:
Sunline Racing Japan
RHD Japan may not have it on their listing but if you send them an email, they will locate it for you and give you a price. I inquired about Weber Sports and asked for pricing when they did not have it on their website. They responded quickly with their prices shipped and had it listed on their website the following day.
Good luck.