I got this
http://www.coastaletech.com/LOCKPICK_CAMERAS.htm
and something like this
http://www.coastaletech.com/GMLOCKPICK.htm
You don't need the gen 5 unless you have an 08 or newer. The Gen 4 is burried deep on their website and I could not find it again. Call them, they still sell it for $189.00. It has a back up cam input, and one extra A/V input plus a USB port for charging. Also comes with a remote control... which I have yet to really study.
I'm having the viper remote start installed at Best Buy (install was free with purchase) and had some Best Buy gift cards laying around so I'm just going to pay to have my cam, lock pick, and rear license plate pocket installed with cam.