@crashD
1) instead of trying to source a rare AMG kit forthis car i'll suggest you try getting your hands on a 2000 bumper set for it as it really enhances the look of the car. also here are the wheel specs for the 1996 W202 chassis:
Bolt Pattern: 5x112
Offset Range: 32 to 42
Wheel Size Range: 15x7.0 to 18x8.5
I'd suggest 17's with 215/45WR17's.
2) The car in your picture is a 1996-1998 avantgarde, but a 2000 W210 E-class should set you back around 19-28 depending on model and condition. Be careful though because there are alot of bangers out there which te dealers are trying to offload,.. and at the same time there are a few great machines out there as well.