First off you need the star drives with the hole in them. The screws on the switch are fitted with special screws to help foil bad guys. The tumbler needs a lock smith and the electrical is a separate part. Each is about $100 at the dealer.
Just a note, when I thought my switch was bad it ended up being the nuetral safty switch. Does everything turn on? and it just won't crank?? Do your back up lights work??