My advise is its illegal to get mod chip but if you really want it, some shop that import japanese game do have it. Ask them to do it for you because it's kinda hard for people who don't have experience in electronics.
Warning your warranty will be void immediately if you get it modded and you'll can get caught if you're playing online. Don't do it......... trust me. I got mine modded and it was stolen 4 day after that.