This is a reworking of an AMS hub mount by cleeb1983 for a lower, 20 degree inclination (vs. 60).
This variant also utilizes different bolts for mounting. (4u of M3x20 BHCS, 2U (OEM) AMS Hub mounting screws.
I needed a good hard mount for AMS Hubs that could be mounted in a location with tighter vertical clearances than the 60 degree original angle could allow for.