Locating Radiator Drain Plug?

Im trying to flush my radiator and am trying to locate my radiator drain plug, where would it be located on a 92' Buick Park Avenue?

Lower radiator, driver’s side. If you remove the air inlet box, you may be able to reach it from the top; if not, you will need to do it from the bottom. It’s not easy to get too, but not impossible! Remove radiator cap first, & don’t attempt to open either one with coolant hot!!