According to the viper registry in the vca 549 total units but no indication of different colors...
1999 MODEL YEAR
All US: Cars now 50 state emissions certified
All: Power mirrors
All: Interior rear window/hatch release
All: Interior updates -
new door handles (boomerang)
new shifter knob
All: Driving light covers removed
ALL: Black exterior color
GTS + RT/10: 18-inch wide spoke aluminum wheels with Viper logo center caps
ALL: Michelin Pilot Sport™ tires
GTS + RT/10 - Cognac Connolly® leather interior group
GTS: with or without silver stripes
GTS: American Club Racer (ACR) Model introduced - spring 1999 introduction
homologated for club racing
Smooth intake tubes and K&N air filters (Rated at 460 HP)
Special ACR Badging and decals
Black interior only
Racing harnesses with ACR Logo
18" BBS Wheels
Koni Adjustable Shocks
Different Springs
Delete Fog lights, Radio (and antenna booster) and A/C
ACR: Optional comfort group option
Add Radio (and antenna booster)
Add A/C
GTS + ACR: Optional Silver Center Stripes with Black
GTS + ACR: Optional Silver Center Stripes with Red