This is a mod which was originally started in 2008 by gtasearcher from GTAForums. It was dead for some time, but now I'm continuing it. It improves GTA III's missions, mission rewards, adds ENB Series and much more!
In these screenshots you can see some of the mod's features: XBox loading screens, ENB Series, map changes (no more left Hepburn Heights Tower), changed first mission, and lowered mission rewards.
mission rewards should be higher not lower
Play the game, and you might notice that they are ridiciously high. Especcialy when you notice you can't spend money anywhere.