This is the link to the 5.0 Magazine article on the '03 Cobra. Some folks had asked about which track to take in the mods.... pulley and chip... or exhaust....
The 5.0 guys went the exhaust route and this is what they got.
http://www.mustang50magazine.com/index.jsp?articleid=92678
The 5.0 guys went the exhaust route and this is what they got.
http://www.mustang50magazine.com/index.jsp?articleid=92678