The trouble with surface mount is the strength. Something the size of an OBDII mounted at 90degrees to the PCB wll have a massive amount of side force on it, with only the strengh of the glue holing the the copper to the PCB. Unless you are pictureing the PCB being directly on the back of the connector.
If someone does bring out a surface mount connector it would be pretty useless. Its not going to save you anything in size.
I guess most connectors of this size would be through hole.