Yes and no....
I did not know about the opt/cob one,but I did it the LONGER way opt/3ds then to cob
Anyway most of the models have WAY more textures than SCP handles comfortable (average of 48). While the majority of those would work in RETAIL (much like many of the old Trek conversions I started then) they won't work as is in SCP. The ones I posted recently I had to knock off 20-30 textures and fight with my non-existent skills to make it look decent but they are NOT accurate, merely my interpretations.
IE instead of having several basic hull textures whittled down to ONE base texture that works for all those sections at once...
So you see while it sounds easy there is more than meets the eye to the process...
I know you didn't say SCP, but I imagined you weren't asking about RETAIL FS2...
If you are a modeler/texturer these challenges are nothing to you, but there is no such thing as a direct port for SCP FS2 unless you severely edit those models first.