For the front, there are two ways to go. If you're willing to buy new fenders, the entire new style nose will bolt right on. As Sidriptide noted, there is an alternate way. The header panel for the new style is more rounded at the upper/outer corners than the old style, which have more of a chamfer. Take the new header, fill in those corners with Bondo before installing the header, then shave down the corners to blend into the profile of the older style fenders. As Sid noted, there is some Mickey Mousing required to attach the new header to the old style fenders, but it can be done. You'll also have to tinker a bit with the wiring for the side markers.
The rear does not change. The entire contour of the hatch opening changed in 1997. The new style taillights will NOT replace the old style without major surgery to the body surrounding the opening. However, you can use the new style rear flares and rear bumper.