Panelview Components are not designed to be directly compatible with CompactLogix processors. They are designed to work with SLCs, Micrologix, and Micro800 PLCs, and will also be discontinued in January 2016.
I seem to recall someone saying the Panelview 800s support the L1x series of compactlogix controllers, but i can't seem find any information verifying that on the AB website.
I believe your best option would be to purchase i Panelview Plus 7 Standard (the replacement for the panelview Plus 6 Compact models). They are costly, but if your customer requires AB only, they should be ready to pay the price.