Does having the GPS Antenna under the tray affect the reception?

I have the same setup and nope, no issues with the placement. signal strength is always green. (with mavericksters mods you can see it all of the time)

Looks like it came from the factory like that. I used to have a 06 F150 and had my Avic D3 installed and people couldn't tell if it was aftermarket or not. I didn't have any issues reusing the factory Sirius antenna. You just have to remove the plastic casing around the connector to make it fit an aftermarket Sirius tuner. I used double sided tape to attach the Sirius-PNR2 for the D3 to the bottom side of the factory Sirius box. I mounted my GPS antenna under the tray on the metal bracket right behind the radio, and that worked great.

I recommend http://bestkits.com if you don't like the Metra or Crutchfield dash kit. The bestkit one is way more robust and factory looking. It also fit much better than the Crutchfield kit I had.

Nice install, I'm installing mine in a Ranger. I am going back to the store today because the double din does not seem to fit properly, the Mounting screws are not long enough to screw the mounting hardware on and the slide guide on the back cannot be mounted low enough because the slide is on the bottom not the top.

Could you post some pics of your IPod install as well as backup camera install please.

Thanx