hey guys, i just bought a Pioneer AVH-P1400DVD touch screen from a buddy of mine because he just got a new one. I was wondering how difficult these are to install. All i have is the touch screen, no wires.

Are the existing wires behind my stock headunit compatible with this new one? (i have a feeling they dont)
Is it difficult to set up a mic with this headunit?
What are all the things i need?
ORR is it easier to just have BestBuy do it?
I now know how to take my dash out thanks to Red04MonteLS !

any tips are welcome!