This is a fork of the fixed GPS version from JuniorDjjr. It includes automatic navigation to mission markers, moving targets, a display showing how far you are from the target and some other settings (in the SA.GPS.CONF.ini file).
Installation: Via modloader: Create a new folder inside the modloader folder. You can call it whatever you want. Drag/extract all the files from the archive you downloaded into this folder. Done, enjoy the game!