RX330PT

Hi everybody. Im from Portugal and i recently buy a 2007 RX330 (unique in Portugal, because they did not sell them here, this one is imported from Oregon). Im very happy with the car, and im doing everything i can to put him in a special condition. Im having a lot of dificulties to get a hitch with all the components ( ball mount, wiring, hitch, etc) because Lexus Portugal dont have the list parts for this veicule. Can you PLEASE help me with the information of the original part number of all the hitch package?? With this i can order in Lexus. Big thank you from Portugal.