CC is a bit hit and miss in my experience. It also doesn't allow for teamart conversion, and only for one livery per team except team 1. Furthermore it overwrites the original jam files (as GP3 Edit does) which, in my opinion, is not preferable.
As I have got into manually converting a bunch of 1.13 carsets for use with 2k I am happy to continue with any particular requests. Otherwise I will just continue to plough through the F1 1980s carsets for the time being.
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The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function. -- F.Scott Fitzgerald