I bought my 2005 X @ Thanksgiving and had been looking at it for 2 weeks.

2005 Off-Road Manual Transmission 4x4
I've got the Rockford Fosgate uber stereo with the sub-woofer and all that. It also has the built-in XM radio that all I had to do was call up the number and activate it. 3 months free on new activation. It also has the VDC and locking rear diff but I believe those are both standard. It's also got the auto-dimming mirror with the compass. Protections package which includes the thick rubber floor mats accesory kit, & first-aid kit. It also had the wheel locks and steering wheel audio controls.

The setup you're looking for does exist, on a 2005 model. I'm not sure if you can get that type of setup on a 2006. Once I find my 2005 booklets that I picked up before purchasing the vehicle, i'll let you know.

B.