Yea, but it will cost you big time!
Looking at the back of the radio, at the 6pin molex;
Left pin column bottom to top, pins 1, 2, 3
Right pin column bottom to top, pins 4, 5, 6
Ignition sense is pin 1
Internal speaker - wire jumper in place pins 5 and 6
External speaker - remove jumper, speaker wires in pins 4 and 5
You don't really need ignition sense unless you are going to use horn alert or
timed power off. The radio will remember it's on/off state when the main power wire
is removed and reconnected.