Need help with a few '68 Dart fender codes

I have 3 fender tag codes on a '68 Dart I can't decode. Any help would be appreciated.

2nd row (ABC...)
F: 4

3rd row (Paint/Trim/Moulding)
8: 9
U: U

This was a customer ordered vehicle built '429' if it matters.

Please let me know if you need any other information. Thank you.