Turk,
Called Aviaid and the young man on the phone insisted that the 427 Cobra pan is 9-qt. (part #55410)
http://www.aviaid.com/index2.html
He also suggested to add an extra 1-2 qts for the remote setup with
oil cooler. I believe you want to use 10.5 qts. TOTAL.
Hope this helps.
Regards,
John