99% sure he wants a 3x3. People usually don't call the 2x2 a ZhanChi without including "2x2." Plus, I feel like "original plastic" is generally used when talking about the 3x3, whereas "old plastic" is used for the 2x2. Not sure if there's any reason for this, but that's how I've always heard the terms used.
Although, seeing as this post is from over a year ago, I kinda doubt he's still interested. Y'never know though.