Use Wurth clear with either the Wurth or Einszett (1Z) paint:
http://www.properautocare.com/wuhiglclla.html
FWIW, I repaired my 162s with the 1Z paint and the match is good, the same as the Wurth (I had a defective can of Wurth). In other words, about a 98% match -- I can see the difference, but only if I really, really look for it.
The clear coat IMO is hard to get right. Mine doesn't match the OEM clear, but you can't see a difference, just feel it.