wee.mbr is from wee16-2016-01-31.

grub4dos is from grub4dos-0.4.6a-2022-09-15
The included grub4dos is just a subset.
If you want the full copy, get it from here:
https://github.com/chenall/grub4dos/releases/download/0.4.6a/grub4dos-0.4.6a-2022-09-15.7z
or 
http://dl.grub4dos.chenall.net/grub4dos-0.4.6a-2022-09-15.7z
