Yep they do, hve (www.hve.com.au) have a cai for the auto accent. In order to install the air cold air intake, they cut out a section of the factory airbox. With the right tools (such as an air saw, or Dremel grinder) this is not too hard. It can also be done using a small hole saw, hacksaw blade, and a file, but it will take you a while. Once the hole has been cut, they then drill a few small holes to secure the cold air intake to the air box, and line the join with Sikaflex before joining and riveting the two together.
"I dont suffer from insanity, i enjoy ever minute of it"