Well, if by model you mean the flight model parameters than I have to concede that I don't know. However, If the flight model is table based as I think has been implied or stated here then no, seems to me it could be plugged into the code base.
But if we're just talking the "physcial" parameters and skins then I still think the model is separate from the "code" as I perceived you to mean.
I don't think this discussion is likely to draw out any revealing information.