I have a 92 Audi S4 which originally came with a metal sunroof. I replaced the metal sunroof with the glass moonroof of the 93 S4. It is strictly a bolt on replacement (same exact mounting point). Regarding the sliding shield, after some minor mods, it fit just like the 93-94 S4 Pram S4 88 323 GTX 92 S4 96 993 Turbo