import cadquery as cq
w0=cq.Workplane('YZ',origin=(91,0,0))
r=w0.sketch().segment((-23,-55),(13,-58)).segment((23,98)).segment((-13,100)).close().assemble().finalize().extrude(-183).union(w0.workplane(offset=-53/2).moveTo(0,-73.5).box(122,53,53))