Looking further I see that mobs that are NOT classic that were introduced later on like
a tier'dal assassin (
http://everquest.allakhazam.com/db/npc.html?id=9997) and
an ebon mask spy (
http://everquest.allakhazam.com/db/npc.html?id=9999) in Faydark were on the "Ebon Mask" faction.
With this in mind, it may be more classic to change the faction hits from the quests from "Ebon Mask" to "Hall of the Ebon Mask" since "Ebon Mask" didn't exist until much later.
In this case, the faction hits for the following quests would need to be switched over -
http://wiki.project1999.com/Moss_Snakes
http://wiki.project1999.com/The_Rogue_Take (upon delivering the letter to Giz as well as turning in the locked chest)
http://wiki.project1999.com/Death_of_Lyda_Nasin
http://wiki.project1999.com/Honeybugger_Assassin
Molon T`plth would also need to be switched from "Ebon Mask" to "Hall of the Ebon Mask" in this case.
I'll hold off on doing any more turn-ins for faction until this has been decided upon. The snake fangs take a while to gather!