I will tell you this; if i had to redo my headrest monitors i definitely would hold out to find something more suitable for a carPC setup! Unfortunately I had my headrest monitors in way before the whole idea of a carPC. The whole composite setup just isn't made for the carPC, poor quality and very limited when it comes to wanting to have true multi-zones. In the past I have done some research into replacing the headrest with touchscreen interfaces and had very little luck with it. I ended up deciding to by regular Lilliput screens and installing them in to the headrest myself!