This mod turns your game to be as close as possible to original Playstation 2 release. Unlike my PS2 Full Conversion mods for SA and VC, this one allows you to use your older saves. Changes include map files, models, textures, etc.
To install: just open the .7z and extract everything into your game's directory.

If your game does not open, just change the resolution in scripts/widescreenfixes.ini to match yours.

Updated my mod to 1.1 with some minor tweaks and improvements!
Updated my mod to 1.2, fixed time not advancing after saving.