I figured that this might be interesting to some people who a) don't want the rest of my mod that I am building or b) don't want to wait. Anyway, this mod used Int, Wis and Chr to modify saves.
This works 3e style, where every 2 points from 10 is +/-1 point in savings throw with a max of +7.
Wisdom: (+/-)Spells, (+/-)Petrification
Intelligence: (+/-)Wands, (+/-)Breath
In a single player game, the script will need like 30 seconds to run while the game is not paused (it needs 30 seconds in multiplayer, but the game never pauses). It then should update whenever your stats change.
Simple Weidu install. Let me know if you have any issues.