Not without ALOT of custom body work
The shapes of the hood, headlights and tail lights are all different from the 94-98 to the 99-04 bodies. That will also mean the front and rear bumpers will not match up. The side skirts and spoilers may not be as difficult to blend.
This is not to say you couldn't make it work, but you need one hell of a body guy (or gal) to mold everything in and make it fit right. A well done job like that will surely land you a page or two in a magazine. HOWEVER....
As I stated in another recent post; the Mystic, Cobra R, Pace Cars, and Mystichrome are the rarest of the rares. If it needs paint, I would have it done by a reputable shop to bring it back to spec and leave it be. If you feel the need to customize a Stang, get another model (like a GT) and have at it. I know not everyone can afford multiple cars, and it's your car so you can do what you wish. I just think that there is someone out there that would love to have your car in original stock form and give you enough to buy a guinea pig to customize to your hearts content.
Just my two cents, but it's your car so have a blast!
