How much transmission fluid does an 2003 mustang manual take?

on the side of the trany the passanger side there are two square that look like they could unscrew .both on the side of the trany, look for the one that's higher then the other unscrew with socket rench with no socket easyest way. now poor trany fluid until pours out of that hole you just unscrewed .if empty maybe five courts of mercron five trany fluid. pour throw shifter area take shift off and boot