So I have been looking to add bluetooth to my car for some time now but $300 was not really an option for me. So recently i was at the part dep. buying other stuff and the guy did a search and found the 1K0051437A at $103 price but he could not give me any info whats included and whats not. the 1K0051437 was the first volk-l and I assume this is just newer revision which is already discontinued, however now they have new part # which is 1K0051473 not sure why but that is just about $300. so my question is the 1K0051437A the entire bluetooth kit and would I be able to install it on the Passat? I know I have to code it and all but other than that would it work at all ?