They'll fit but you'll have to cut and re-weld the exhaust hangers to fit. 94-97 cars have a slightly different setup than the 98-04 cars. The pipes/mufflers are going to be in the exact same spots though.
2000 Mustang GT Steeda #0048
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.