Quick question, I only have a 20gig HD in my Xbox, am I right in thinking I might have to delete (god forbid, I still have mates I can whup on 3 who wont upgrade!) my Forza 3 files to fit the new game on? I do have an external drive that I can plug into the xbox and a 16gig USB stick but Ive no idea if these will work? Anyone know?