Need suggestions for New HU and Door speakers

[SeattleJeremy]

I've got an 05 WRX with the Double Din 6-disk HU. I've been using XM in my PGA for almost two years now, and I need Satellite radio (Not going back to FM, that stuff is teh crap).
Looking to spend $300-450 on the HU + Satellite modual and Antenna. Thinking Pioneers FH-P5000MP or DEH-P7600MP.

If I go with a Single Din HU, what will happen with the extra Din? Is there going to be a cubbie holed there? Anyway I can cover that crap up and make it look stockish? I like the clean look.

Also how big are the Door speakers?

thanks!
n00b = me.

[ej20fan]

Kenwood with the Sirius setup is much cheaper. I can cut you a deal on some HU's with the Satelite radio setup.

Yes, there will be a compartment hole under the radio.

The front are 6.5 components, the rear is a 4" Co-axial.

Let me know if you want to know anything else.

Claudiu Ene