Hi all, new member here looking for some info - My C5 was originally a Japanese car so the radio has very limited frequencies, do I just need to swap out the radio unit for a UK/USA unit or does anything else need changing too? I'm also contemplating swapping the head unit for a single din unit with a flip out screen, I like the idea of an upgrade but one that stays period true, and they were all the rage back in the early 2000s. Thanks