This addon is a simple tweak of whoa UnitFrames 1.1 intended for caster. The original addon doesn't show the mana %, this one does.
FOLDER STRUCTURE
World of Warcraft
Interface
AddOns
whoaUnitFrames
config.lua
whoaUnitFrames.lua
whoaUnitFrames.toc
CharacterFrame
UI-Player-Portrait.blp
UI-Player-Status.blp
TargetingFrame
UI-TargetingFrame.blp
UI-TargetingFrame-Elite.blp
UI-TargetingFrame-PlusMob.blp
UI-TargetingFrame-Rare.blp
UI-TargetingFrame-Rare-Elite.blp
UI-TargetingFrame-RareMob.blp
FOLDER STRUCTURE
World of Warcraft
Interface
AddOns
whoaUnitFrames
config.lua
whoaUnitFrames.lua
whoaUnitFrames.toc
CharacterFrame
UI-Player-Portrait.blp
UI-Player-Status.blp
TargetingFrame
UI-TargetingFrame.blp
UI-TargetingFrame-Elite.blp
UI-TargetingFrame-PlusMob.blp
UI-TargetingFrame-Rare.blp
UI-TargetingFrame-Rare-Elite.blp
UI-TargetingFrame-RareMob.blp