You can find the part numbers you need and more information on the display on Martin Bishop's site http://www.bimmernav.com. On the right side of the home page are the parts needed for the wide screen. Martin used to sell them, but no longer does so you will have to get them from the dealer or another source.Boz M5 said:I know this has probably been discussed on the board already, but I haven't been able to find it. What Im needing is the part #s to convert my 00 M5 to the wide screen mark 4. What do I need to do this change? Thanks for your help.