Where are the monster truck parts for lighting mcQueen in mater national for ps2?

Where are the monster truck parts for lighting mcQueen in mater national for ps2?
Tires are behind the courthouse (Red's place in the movie); the statue of Stanley is in front. The horn is lying in the street in front of the Casa della Tires. The last piece is on the dirt track that's to the west of the big radiator-cap rock out in the desert.