Homunculus 8.0 must be protocol version 286. If that's the case, then there is a '286 Dat Editor' on mmo-dev and maxcheaters forums. You can also google it with the respective forum name along with the 286 data editor search term.
I do not know if sharing external links is forbidden or not but here it is:
You can download it directly from here:
https://l2j-mod.ru/download/Dat_Editor_286.rar