HOW TO INSTALL:
1. Download and install NFS-VltEd (v4.5 or newer recommended).
2. Open your Need for Speed: Carbon installation folder via VltEd (File > Open).
3. Go to File > Import > ModScript and select any 2 versions of the .nfsms files of your choice.
4. Click Install and wait for the process to finish.
5. Click Save (Ctrl+S) in VltEd to apply the changes to your game database.
6. Launch the game and prepare to suffer.