the autokhana is on at belmont racecourse. if you go across the farmer freeway out of town towards burswood, go across the bridge and you approach the exit to get into the casino the back way. take that exit and it is on the left. i believe it is on at 9am, but as it is my first time, i will be heading down there about 8am to register. i believe that the car just has to be mechanically sound. some more info here...
http://www.actionalarms.com.au/Motorsport/
hope to see you there. i am in a VERY yellow RS.