Serial number vs Year of manufacture vs FIS Color

Hello, Would like to buy me an R8 and am just on a sightseeing tour to find the right one. Today I visited one, in which optically everything fits, but the history for me is not quite clear. That had serial number 243, so should be one of the first built. But first registration is in mid-2008 and he has white FIS, although the yesterday visited with SN 4584 still had red FIS and EZ 4/2009 was. Furthermore, at a KM stand of 23,000 the driver’s seat was on the side sc hon optically ripped off, which I cannot understand. Can the stored KM stand be read out somehow in the engine control unit or can it also be manipulated? Thanks for the help LG