We may not have part listings but there are several guys over at the tccoa with 5.0 Supercharged and a guy that's just now slapping a twin turbo kit on his 5.0. Go check it out.
www.tccoa.com
It has SC's too but it's basically for the other Birds.. 3.8, 5.0, 4.6. Your questions will be answered there.
5.0's
4.6's new and old
4.6 DOHC's and
5.4 SOHC's DO bolt right in with no modification except to maybe the hood.
Hoverver.. I've heard that 5.8's require more time and work.. it's been done.. but it's NOT easy or cheap.
It's been done though to an 89 Cougar. He's in the reader's rides section of Tccoa.com find him and ask him.