Just installed my metra DD kit today along with a 6.2 inch clarion headunit with nav, dvd, ipod interface.....
Took about 3 hrs total, and most of that was just soldering and heatshrinking the wires together. Also, I installed a break bypass, in case the passenger would like to watch a movie while the the car is in drive.
Let me know what you guys think. And, if you have any questions about it
The mess of wires:

cutting out behind the stock head unit

installed and looking nicccccccccce