I made a few B5 ship files for GC1 long ago which have been incuded in a few of the larger mod packages. a few ppl wanted to do a larger mod for B5, but as far as I know it never produced any results.
It is a real pain to get new graphics into GC1 which was the reason I stoped at one point and for me it was only possible at all thanks to Dark Rains tools. I hope GC2 will feature real 3D objects to mod.