The cutscene version of Diaz had an unfortunate flaw — his shirt and pants were not connected in any way, which is why we could see the inside of the model through huge gaps along the entire length. This mod fixes that.
Installation: move the 'CSDiaz' folder to the modloader folder, if you have it, or add with replacement the contents of the 'CSDiaz' folder into the gta3.img, if you don't have the modloader.