Star Wars X-Wing (2nd Ed): Millennium Falcon - Rules of Play says:

With the Millennium Falcon Expansion Pack you can fly this iconic ship into battle. Featuring a Modified YT-1300 Light Freighter ship miniature blasting off with a striking engine glow, this expansion also contains four YT-1300 ship cads identical to those found in the Rebel Alliance Conversion Kit and reprints of fourteen essential upgrade cards, inviting you to make your own personal modifications. Finally, two Quick Build provide suggestions for combinations of pilots and upgrades, helping you get into the battle even sooner.