04_350z

Hi everybody, I'm about to pick up an 03 350z with 33k miles on it. I haven't test driven the car since it's located about 400 miles from me. But the owner said that it's in perfect condition mechanically and cosmetically. However, I just finished reading the "tranny" thread and it seems like a lot of people are having that replaced. Should I be concerned? Also, you guys have mentioned an 008 or an 009 tranny. What does that refer to? Thanks for your help guys.