I have a Cobra seat in new condition for sale. I was going to make an office chair out of it, but never got around to it. The seat is originally from a 200 series Superformance with removable seat bottom, but would fit most Cobras.
Pictures at:
http://www.cobrauniversity.com/other/CobraSeat1.JPG
http://www.cobrauniversity.com/other/CobraSeat2.JPG
$100 or ($125 with shipping in the US)
Stephen
Long Beach, CA
stephen@cobrauniversity.com
(562) 618-0612