Insanendreas

the garage in San Fierro now allows you to deliver cars (though only after finishing Puncture Wounds). CJ is now invulnerable and has infinite ammo, although you will still need to reload. This modification also has a weapon select, car select and even control any car by remote!! amongst other items included in the readme. This modification is recommended for those that have already completed the game as this is almost the same as using cheat codes. Please note that since this modification will overwrite several important files within the San Andreas directory it is highly recommended that you back these up to save you from having to reinstall the game from scratch which can be painful at the best of times.
Here is an interesting modification simply called Insanendreas, this modification will add several things to the game including: a green sabre that will spawn when you complete the game (i.e. 100%),