Last Month the Japanese try to retrive this mod a little bit more. They played in the at 2pm CET. At the moment the gametracker,com Server Monitorring is off. Hope soon they turn it on. The ranking seems to work.
I believe stunt park 2 was planned for interstate vietnam, but its a long way off. I will see if I can get in touch with the maker of the original stunt park to see what happening with it.