Not needed for 4 wheeling. But I just got a set for mine. My son is going to love watching movies or playing games on the long drives.
http://item.mobileweb.ebay.com/view...0933426396&index=6&nav=SEARCH&nid=54815332665
This seller has them for different interiors. $375 shipped
http://item.mobileweb.ebay.com/view...0933426396&index=6&nav=SEARCH&nid=54815332665
This seller has them for different interiors. $375 shipped