To the best of my knowledge the frame did not come in different sizes, only the chainstay length.
I think 19" was the standard length and I think there was a shorter one and a really long one.
I'm trying to decide on purchase of a V2. I'm pretty sure I'll need a longer chain stay. (6'4" tall) Are long V2 chain stays still available? (I'm still waiting on reply from support@cruzbike) Should I plan on changing to V20 chain stay and boom instead? Are V20 long chain stays and...
forum.cruzbike.com
Post #5 may have some information that can help you.