Hahaha thanks guys! Upon cleaning the trash out of the interior, I found 1 pair of dirty rotten men's boxers and 1 Van Halen 1984 CD! Woohoo! Plus the interior is like a Coinstar, there's change everywhere!
I did manage to flush the engine and change the oil today. Cost me a new drain plug too, old one stripped.
I may begin on removing the interior tonight...
'09 Mustang GT Premium