Brandon- stock 460's generally hold 6 quarts with the filter . Next time you change the
oil after running your car mark your dipstick at that level. I also found that 460's run a bit better with a extra quart but they tend to blow/throw it out over 1000 miles or so.
You also need to upgrade that stock pan for a performance pan even with stock engines in Cobras. Cheap insurance.
cobrashoch