Anyone know what years parts will work with a 2003 Galant? I'm having trouble finding things that dealers list as 2003, most are 99-02. Will these parts work?

2003 is the 9G Galant from US, this car is still new, and its not similar to JDM spec 8G Galant, so it will take some time until repair shops understand them, so you may look up Chrysler Sebring, as US Galant is identical to this car in several ways.