This is using the Pro Clip mount in a Trailblazer, along with their tilt/swivel adaptor. Very easy to do. You do have to drill a hole in the Uniden mount so that you can do the final assembly easily.
Step 1 - Mount Pro Clip vehicle specific bracket.
2 - Take apart the swivel and mount the back half to the bracket
3 - Screw Uniden mobile bracket to front half of the swivel piece
4 - Insert small screw (through the hold you drilled) to reattach the two halves of the swivel bracket.
Also, should be obvious, I am using an external antenna. I picked up a glass mount from Ebay (Antenna Max), which is mounted on the rear side window. Works VERY well. I have a matching one on the other side for my dual band ham rig.