I haven't done this yet, but I'm planning on doing it very soon. I've got a 96 so the dash is a little different but...
My idea was to take the bezel that goes around the radio and cut slits on either side, expand the bottom to accomodate my lilliput housing, then to bondo the hell out of it. Sand. Bondo. Sand. Primer. Sand. Posisbly more bondo. Sand. Primer. Paint. Attach lilliput, reinstall. Be happy <g>
I'll try and do pics if I can get them.