I bought my Shaker 1000 on eBay for $310 and installed myself... catch to it is you still only have the regular speaker set up. As far as aux in's I did not see any "regular" inputs, there are empty (no wires in them) holes in the factory connectors. Some of these may be for in's. If you want to take the stereo out Here's some simple directions:
1. Open center console and take the two screws out at the back.
2.Take trim off around shifter(this just pulls off).
3.Pull e-brake up.
4.Lift console starting where you took the screws out. Whole top all the way to the dash will come out. Set it aside.
5.The two side panels are next. Just reach down where the panel reaches the carpet and pull toward you, they will simply snap out.
6.Unscrew the six screws that hold the main cover on.
7.Pull the main cover out and unplug the wires to the a/c controls and airbag light and 12v outlet and remove cover.
8.Unscrew the 4 screws that hold the radio in and pull radio out, reach behind and unplug connectors.
9.You are done.
05 Mustang V6
Screamin' Yellow
Shaker 1000
Yellow Interior Highlights
Dead Pedal
Yellow Calipers and Rotors
Leather Wrapped GT Steering Wheel