A Quality distributor cap will have the firing order stamped next to the spark plug wire input socket. The firing order of the Land Cruiser 6 cylinder is
Advance and Retard Timing
To advance timing, rotate the distributor counter or anti clockwise. To retard timing rotate the distributer clockwise. For timing mark locations, see the Timing Mark FAQ.
For tune-up and ignition parts see the following SOR links:
Distributor & Distributor Parts, Cap, Rotor Condensor & Points: See page 022
Plugs, Plug Wires, Igniter & Coil: See page 024