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.
the map you downloaded is in a .rar format, similar to winzip, you need winRAR to open it, inside the .rar is the map with .rfa, take that and place it in your levels folder same applies to the patch, you need both the map and the patch in, so you should have both sun_city_raceway.rfa and sun_city_raceway_001.rfa in the levels folder.
start the game, make sure you are running conquest if you are running in local mode or whateverr