Running wires!!! HELP Gauges n Stereo

Where is the hole in the fire wall for wires i never found it... i ran them by the door on my 93 base but i just bought a 96 gt and sold the base and i want to do this car right. how hard is it to hook up gauge pillers with electric gauges voltage, vacume, air fuel

check near the steering column or just go through the rubber on the steering column