I am in the NE, and have a IS350 with the ML Audio. But there are only two ways to get it..
1. I bought the car out in the West (Van Nuys, CA and drove it back to NY)
2. special order the ML Audio from a dealer, and wait 3 - 4 months
Also by buying in the West, I was able to also get the Sports package, which is not available on the NE.