Looks a great example, well done. Be careful with the sunroof. A mk3 golf unit swaps straight in. Do you know if the mechanism is working fine? If it is faulty and you wind it back electrically it could damage the sunroof panel.... perhaps try doing it manually first using the Allen key at the sunroof motor.
Fingers crossed that it is ok, preventative maintenance, lube the runner channels. Even better, take the lot out, strip it down, clean it, then lube it. Big job but worth it in the long term. Too many are broken out there and no spares are available
Great car 👍