Altered Thac0 Table

Is there any Mods that give the Thief and Bard the Cleric Thac0 progression and upgrade the Mage/Sorcerer Thac0 to vanilla Rogue progression, both like in 3.5? I know about the unnerfed Thac0 table but all that really does is make late game rogues more combat viable. If there is not, how would I go about modifying it myself?