currently looking at a 2007 cls550 for sale.
it doesn't have the amg sport package (321 package), but has amg body kit 772, amg wheels 786, sport package 951, STEER.WHEEL GEARSHIFT 428...
what is it missing for the AMG package ? quite confusing ...
here is the list of options :

07Q GV-NAO BRAKE LININGS
200A LEATHER
204A LEATHER - BROWN
212B OP. INSTRUCT. AND MAINT. BOOKLET-ENGL. FOR USA/CAN
221B SIGN COOLANT/REFUELING - ENGLISH
22N STEUERCODE WERK SINDELFINGEN/GRAZ
232 GARAGE DOOR OPENER WITH 284 - 390 MHZ FREQUENCY
242 FRONT SEAT RH ELECTRIC ADJUSTABLE WITH MEMORY
249 INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING
264 LICENSE PLATE ATTACHMENT AMERICA
267 MODEL PLATE DEVIATING
275 MEMORY PACKAGE (DRIVER SEAT, STRG. COL., MIRROR)
284B AIRBAG LABEL - ENGLISH FOR USA
293 SIDEBAG IN REAR LEFT AND RIGHT
294 KNEE AIRBAG
301 ASHTRAY PACKAGE
310 DUAL CUP HOLDER
359 TELEAID USA
389 MOBILE PRE.-INSTALLATION (MTUS) USA/CANADA COMPL.
401 FRONT SEAT CLIMATE CONTROL
414 ELECTRIC TILT/SLIDE SUNROOF IN GLASS VERSION
427 AUTOMATIC TRANSMISSION 7-SPEED
428 STEER.WHEEL GEARSHIFT BUTTONS/SHIFT PADDLE PAINTED
461 INSTRUMENT WITH MILES IND. AND ENGLISH LEGEND
470 TIRE PRESSURE MONITOR (TPM) LOW LINE
489 AIRMATIC DUAL CONTROL / AIR SUSPENSION SEMI-ACTIVE
494 U.S. VERSION
524 PRODUCT PROT. F.PAINT - TRANSPORT VEH.PRESERVATION
530 COMAND DVD APS USA WITH NAVIGATION
536 "SIRIUS" SATELLITE RADIO COMPLETE SYSTEM
540 ROLLER BLIND, ELECTRIC, FOR REAR WINDOW
551 ANTI-THEFT/ANTI-BREAK-IN WARNING SYSTEM
573 CHILD SEAT MOUNTING, ISOFIX IN REAR
581 AUTOMATIC CLIMATE CONTROL
600 HEADLAMPS - CLEANING EQUIPMENT
615 BI-XENON HEADLICHT W.ACTVIE CURVELIGHT RIGHT-DRIVE
634 DELETION - FIRST AID KIT
636 DELETION - WARNING TRIANGLE
650U CALCITE WHITE - STANDARD FINISH
668 PRODUCT PROT.F.TRANSPORT VEH. W/ TIE-DOWN HOOKS
690 EMERGENCY SPARE TIRE (MINI SPARE)
691 BLUE HEAT-INSULATING GLASS ALL-AROUND, GLASS REAR
705L UNITED STATES (USA)
763 RADIO REMOTE CONTROL W/ PANIC SWITCH (315 MHZ)
772 AMG STYLING PACKAGE-FRONT SPOILER, SIDE SKIRT
786 AMG DOUBLE-SPOKE WHEELS 18" WITH MIXED TIRES
7XXL NORTH AND SOUTH AMERICA
807 YEAR OF MODIFICATION
810 SOUND SYSTEM
819 CD CHANGER
889 KEYLESS - GO
919 AIRCON COOLING POWER PACKAGE
951 SPORT-PACKAGE USA
95V SPEED- + LOADINDEX 99Y XL+101Y XL
986 DEVIATING VIN WITH MODEL YEAR
989 IDENTIFICATION LABEL UNDER WINDSHIELD
A22 NEW CONVERTER GENERATION
A24 JOINT FLANGE, 4-ARM 120
A45 O-SHIFT PLATE WITH VGS2
H05 LAUREL WOOD VERSION, GLOSSY
K12 STEUERCODE FUER SERVICEINTERVALL
K14 STEUERCODE FUER SERVICEINTERVALL 20000 KM
M273 V8-GASOLINE ENGINE M273
M55 CAPACITY 5,5 LITRE
R01 SUMMER TIRES
U12 FLOOR MATS - VELOUR
U27 BOTTLE HOLDER