I've a feeling I may get banned from solving these anagram puzzles.
The key to solving them is finding something simple but distinctive about the available letters, and with this one it was most likely to be the two Xs. It's then just a case of waiting to stumble across possible answers. But there's also the name "Essex" in there, so I did a quick search, and (embarrassingly)
this car turned up.
And "Dog sambas wry Xeroxes" rearranges to:
Essex Arrow S-X Magbody
Sorry!
