H6XW interior has white door and rear panels, a-pillar trim, window opening moldings and headliner, and black carpet, kick panels, console, package tray, and dash.
It will be hard but I seriously need new white panels; I have one minty door panel I bought almost 20 years ago, the rest are chalk. It would be best to get four new matching _IF_ they're both good enough and affordable.
If I still have a job by the time the Challenger white panels are available (probable) I'll do whatever I can to buy a set.