the CO2 of 2002 looks like the Balck Tip 2002. The difference is the lower AR.
Both, CO2 and Black Tip can be converted to 2-line kite.
Sizes:
T.sqm 3.5 4.9 5.7 6.8 8.2 9.5 12.2 15.6 19.7
Size 2.6 3.6 4.2 5.0 6.0 7.0 9.0 11.5 14.5
AR 2.9 3.1 3.3 3.4 3.7 4.0 4.2 4.5 4.9
More info:
http://www2.cabrinhakites.com/CO2_2002_B.html