Im tempted to install one of these in my legend.

I also intend to use the parking brake bypass

Now my question are besides having to chop up my radio and then having to cut my dash to fit the double din, what do i need to be aware of wiring wise.

I tend to just get a harness that will fit my honda, and match up the wires. However, I understand there is an amp in my car that I would need to bypass. How do I do that? As I intend to keep my stock speakers and not install anything else to it.

Also can I keep my stock CD stacker and somehow will the Sony accept the stacker? (in case my old man drives the car and wants to listen to his tunes on CD).