head unit

if anyone has one or seen one I would greatly appreciate a heads up. Someone has fitted a after market head unit to my zed which works fine and does everything it says on the tin, but it's not the original and it fexes me every time I get in even though I hardly turn it on! It's just the fact...

Hi, I'm in need of an original tape head unit for my 2003 Z3m, working or not. Thanks