Different backspacing, you need to run spacers to put 05-14 rims on a 94-04 car. Which makes it not cost effective at all unless you are getting the rims for free or at a steep discount. A good hubcentric kit with new studs like the Vintage Venom kit is $200 by itself.
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 ****.