found some .cry files for the amazonia river map, along with a couple of the others. If you drop these folders into your 'levels' folder, you'll be able to open the .cry files with sandbox editor. Youll be able to do anything you want with the map then - including installing EQM or part of EQM onto it if you choose.
http://www.crymod.com/filebase.php?fileid=2907&lim=0
http://www.crymod.com/filebase.php?fileid=2907&lim=0