I have no clue if it could or not. Some other guy that was interested was thinking about doing that. Since I had them the crack has remained the same length. As long as you're not using them for track, you're good. Yes, they're 13.
Im looking for the drive side rear door for a 4door in the Bay area in good condition for a reasonably cheap price. Preferably orange, but any color would do. Let me know what you have :)