I'm posting this for anyone who wants to install an aftermarket double din radio in their 08 compass.
The parts I used are as follows:
1. Pioneer AVIC-F700BT v2.0 firmware
This install should be the same for the following models AVIC-F900BT, AVIC-F700BT, AVIC-X910BT, AVIC-X710BT, AVIC-F90BT & AVIX-F7010BT
2. METRA 99-6510 04-07 DODGE/CHRYSLER/JEEP NAV DASH KIT
3. CHYAH05 Premium Radio Replacement Interface Chrysler
4. Jeep Patriot 2007-2008 Stereo Radio Antenna Adapter
5. Satin Silver Metallic. Kit includes silver center stack bezel And audio head unit support bracket. Fits Model Year 2008. Item # 82211589
Photo's below.




i dont have the 08 compass anymore (traded it for the 11 compass). Sure you can find the parts. Google is your friend.
Amazon.com: Metra 99-6510 04-07 Dodge/chrysler/jeep In-dash Cd Player Mounting Kit to Replace Factory Navigation System: Car Electronics
this should work
Amazon.com: PAC C2R-CHY4 Radio Replacement Interface for Chrysler: Car Electronics
Radio Stereo Install Antenna Adaptor Adapter Cable 5 | eBay
08 10 Jeep Compass Patriot Navigation Radio Instrument Bezel w Bracket Mopar | eBay