There's also a hl2 version, lol. I also made a conversion of CO for JO and JA +water. Actually the q4 map is based on the JO/JA map file, so I didn't have to rebuild the whole thing.
http://www.geocities.com/Area51/Holl...files/jk2maps/
http://www.geocities.com/Area51/Holl...files/jk2mods/
Never really finished them, that's why I've never released them.