Just use plain 2mm header socket strip -- you'll have to check that it fits within the receptacle, but I think there should be enough room for that. You won't have polarization (at least without some additions or tricks) but it won't be well supported anyway and piggybacking on nearby screw holes or something (spacer + screw) is likely needed for support, and that solves polarity just fine. Otherwise, just remember which way it goes.
Tim