I found this odd variant. It it's a CD 162 with a larger and wider dome and wire groove. The piece in question is on the left. I have a "normal" hemi 19 with the exact same mold for the base, compare the lettering yourself ( the dropped G on the front, the squggily legged M on the rear) When I first found this piece I mistook it for a 164. It appears to be a 162 base and a 164 dome, sound off off you have one or have seen one. Thanks in advance.