If you can get the exact dimensions[or links to ortho drawings] and pivot points, I can easily create any fixture shape, fairly quickly. I already have some generic standard objects, lights, TomCat truss, ETC Source-4 fixtures lying about...RexHeavyIndustries can hammer just about anything into shape.
I own a license for one 3D game engine[Torque] and MOD in the Source HL2 engine too, so I am very familiar with producing 3D shapes with a hierarchy and skeletal animation...;), too bad MA3D doesn't support .x files[which can contain bones and deforming meshes], as I haven't actually gotten those imported.
Here is my personal 3D webpages...