In regards to the touchscreen, you simply need to measure the screen area of your display and we should find a match to suit your car. Most common display sizes are 6.5, 7 and 8".
Give us the length and width of your screen area and I can tell you if we have it. And you are right, you wont need the USB part.
The new module has a mini touchscreen adapter that can be connected to the touchscreen. The mini adapter will be wired behind your dash (just power and GND). Then there is a extension cable harness that connects the adapter to the main mimicsX2 module. This means you can externally mount it in case you cant find any room behind the dash. Since the extension cable carries power and all the comms, you wont need to connect any wires to the main module, simply plug the harness from the mini adapter to it. This way if you change your vehicle, you can simply unplug the main module without having to open your dash again!!
Hope this helps