lager 87mm hubsan x4 replacement frame (h107)
this is very similar to my smaller 57mmm frame: http://www.thingiverse.com/thing:435484
the distance between the motors is 87mm, which is the biggest possible span for the stock motor wires.
the flight behaviour is really different, i'd describe it as calm, alsmost lethargic - should be great for filming.
UPDATE: A23 Version for 8.4mm Motors (Hubsan H107c) online