I strongly think the classic casting animations are included when you patch your eq.
The lastest Project 1999 patch includes spellsnew.edd, Spellsnew.eff & SpellEffects Folder.
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Theres this:
https://www.project1999.com/forums/s...d.php?t=128473
and found this:
https://www.project1999.com/forums/s...d.php?t=129722
Both from 2013 no idea if they work still.
Modifying graphics is a major gray area on p99. do so at your own risk.