Draining Coolant From The 4.0 Liter Engine

On the 2d Generation Tacoma with the 4.0 engine, there are said to be two drain cocks for the block. One is located on top of the driver's side valve cover and on th left side of the block below the filler neck for adding oil. I still can't seem to locate these two drain cocks. And yes, I know that the drain cock on the bottom driver's side of the radiator must be opened for draining also. But the fact still remains that this doesn't drain the engine block.


Any idea's out there. Please advise. Rex!

 

Yea, the one on the radiator will not get alot, How i did it was I pulled the water pump housing when I put in the SuperCharger and the majority of the coolant came out. Find the 2nd plug but keep this in mind for a last resort.