Second, as far as pulling on the Shelby with an 03-04, don't even think about it, because whether the car has a twin screw or not isn't gonna matter much. The Shelby will have Ford GT heads and 5.4 liters of dispalcement, so whatever s/c Ford chooses is gonna make this car an absolute monster.
LOL.... I guess all 03-04 Cobras are stock....