The wookie comes with the kit and is also 1/48. Originally the arms were down and forward, he's supposed to go in the walkers hatch with his hands palm down on the roof. He had to undergo a little surgery to get him like he is now.
Pity! It would be great to be able to get figure kits from SW in small scale. I'd love to be able to try and recreate some of the scenes from the films.