VAC aluminum seat/floor mounts (http://www.vacmotorsports.com/cgi-bin/view_item.pl?item_id=173)
standard length
silver
edit: sold

Used but in good condition. Comes with hardware (bolts, washers). These fit E36/E46 cars and are not side-specific.

Just bought mine in black this morning. Good luck with the sale. These are great mounts!

PM sent...interested/dibs.

Second Dibs if the first falls through.