It is often the case that a COTS off the shelf screen will not quite fit a customer's requirements.
Connectors, mounting points, cable pin outs and/or specialised IO. All create issues for customers who need very exact features, either because they are doing an upgrade or they have physical constraints put on them.
Vartech in the USA is very good at working alongside Unitronix to customise their standard equipment into special builds in accordance to our customers requirements.
We have done this a number of times for Military upgrade programs in Australia. Call us and tell us what you require?