Not sure if this is of any help, lists the release data anyway:
Code Description
580 AIR CONDITIONER
C70 No code designation available
E40 No code designation available
G75 SPEEDOMETER ADAPTER
H02 "BEHR" AIR CONDITIONING SYSTEM
K54 EXHAUSTGAS RECIRCULATION
P39 ENLARGED FENDERS FOR WIDER TIRES
Q58 FRONT TOWING COUPLING
S34 HEADRESTS IN THE REAR
U40 SEAT COVER IN SINGLE-COLORED INITATION LEATHER (MB-TEX)
V18 INTERIOR TRIM IN BLACK
V46 FLOOR MATS FOR PASSENGER COMPARTMENT
V51 ELECTRIC WINDOW LIFTERS (FRONT AND REAR DOORS)
VF6 No code designation available
X01 PLATES, SPECIFIC COUNTRIES
X03 VERSION MADE TO REGULATIONS OF SPECIFIC COUNTRIES
YA7 CORROSION PROTECTION MEASURES
Z11 EXPORT SPECIAL VERSION, FOR ROADS IN BAD CONDITION
Z86 STEYR-DAIMLER-PUCH MARKETING AREA
Z98 PAINTWORK OUTSIDE SAMPLE CARD
Z99 ORDER AS PER DETAILED DESCRIPTION