I've put together an ARMIPS document/thing with the help of x0_000, which contains a complete, insertable, repointable, editable in your textediorable script for Advance Wars 2.
Should be a lot easier than repointing in the ROM! As an added bonus, the inserted script will save a lot of space in the text area of the ROM, you might end up with a bit more free
Give me a yell if I've transposed anything incorrectly. Readme in the file should tell you how to use it.
Hidden TextEdit: Hahaha, the reinserted script saves almost 5000 bytes of space.