there is a mounting adapter kit on ebay (bought one a few years ago) that lets u put one of the adapters supplied to the crossfire mount , then mount the std mirror or monitor to it. there is one that has 3 or 4 adapters in and it works in the crossfire
the one i got was auto-voxx1pro/t2/ x000wfw9fd

Rearview Mirror Camlock-to-Wedge Mount Adapter Kit ebay

found this and it fits crossfire