74 Duster Headliner Removal?

My 74 has, from what I have seen it being called, the "hard-liner." It isn't the cloth headliner, but the ABS plastic headliner. I have searched all over the place and I cannot find anything concerning the removal of one. I know how to replace the cloth headliners, and was wondering if the same methods can be used for the plastic ones before I tear the one I have up. My Duster is gold and I am converting it to black, so replacing the liner would be easier than painting it.

Thanks for any info.
-- Drake