With the high cost and limited availability of factory matched models most vehicles will use a universal.
Standard Universal models Do Not have any Vehicle Specific Applications but are fairly easy to check fit.

Some Tech Tips from CarMobileAudioVideo on Inspecting a Vehicle for Universal Car Video Monitor Fit and Install.

If more Questions Feel Free to Contact Us - the most requested FAQs will be added Here with more Tech Tips !

             -------------------------------------------------------------------------------------------------------

Headrest Monitor Types
Factory Replacement - OEM Matched Replacement Vehicle Headrest Systems
Universal Replacement - Dual Post LCD/Headrest Systems in 3/4 basic Colors
Dual Post Bracket - Clamp Headrest Mounts for Easy Non Permanent Installs
Strap in Mount - Non Permanent Headrest Wraps fit most types of Headrests
Cut in Shroud - Permanent Cut Installation mounted Car Headrest Monitors
Glove Cover - Slide Over Headrest 3 Colors Neoprene Cover for Cut In LCD

             ------------------------------------------------------------------------------------------------------

Universal Replacement Car Headrest Monitors
This type will fit many but not all vehicles so the original has to be compared to the adjustment range specs to verify.
One Measurement will be the Diameter of the Posts to verify how thick the originals are to see if Pole fit Seat Holes. 
Then Post Distance, measure Center to Center (or Outside to Inside of other) to confirm its within adjustment range. 
Material interior match unfortunately is not possible in a generic 3-4 color universal model only a close color is possible.  
Limited options allow mass production compared to matched headrests provide an alternative to high cost factory models.

             -------------------------------------------------------------------------------------------------------

Cut In Headrest Installation Example Guide

http://i12.ebayimg.com/07/i/000/bf/de/a592_10.JPG  (eBay Picture Link)

             -------------------------------------------------------------------------------------------------------

More to be added soon, What Would You Like to Know ? Let Us Know !

If Applicable but Not Helpful - Please Let Us Know Why ( a No below without it wont improve it)

If you found Any Helpful Info here Please Click YES below to let others know so they may as well.