i have proven that two 10 guage power cables and a set of RCA's can fit through the factory plug
it was a pain in the ass, especially the drivers side, where i already had 14 guage speaker wire and 2 other wires from my alarm to my window modules
i'm putting one of these in each door:
along with one of these red amps in each door to power them:



i'm putting one of these in each door:

along with one of these red amps in each door to power them:
