Looks like you tested it out on the E39. Now I have a '97 540 with both Navi and TV, does than mean that If I get both 16:9 screen and the MK3/MK4 units, the pic will still look jacked up because my original TV unit is 4:3? Also, what benefits do I get if I just upgrade my MK1 to MK3? I mean they cost around $200 used, does it worth it? And can I even do that with existing wiring, since I've been on forums for a while now and have yet to come across the MK1 unit. Any info's appreciated, thanks folks =)