h shyam
you can create a co-co bogie textures in the place of bo-bo in tat way it would sort things out.On the other hand if you want to a 3d model of co-co bogies you can do it and if you are really familiar with 3d modelling you can do it in gmax or 3ds max in this case you can create a box with necessary dimesnions then create a 512*512 or 256*256 transparent tga texture convert it into ace file and then apply the transparent texture into your model.These are the 2 best methods to create the co-co bogies in msts.
thanks