Cleric Domains and Specialist Magic Users

[Falstaff]

Are there optional rules for modifying clerical spells into domains and magic-user spells into abjuration, conjuration, summoning, etc?

I am thinking of using Dragonlance 2ed or Forgotten Realms 2ed, both of which have the above rules in them.

EDIT: I bought print editions of Strongholds of Sorcery, Monkey Isle, Adventure Anthology 1, and Basic Field Guide 1, but I see they have all had updated pdf versions. Do we know if they have also been updated in the hardcopy versions that are on Amazon?

[Dimirag]

There is the Specialist Clerics Supplement but I can't remember if it deals with dividing the spells into spheres. Other tan that I think there is none, BFRPG tends to avoid codifying things.