In the context of this website, we have illustrated only a few of over 15 different configurations of 2 production baseline models.  That is more than 30 different top level assemblies and under each of those assemblies linked to each top level assembly is between 5 to 15 sub-assemblies.  Under each of those sub-assemblies are more sub-assemblies.  You can quickly comprehend and appreciate that these 3D models are extensive and complex but because Methods constructed each in an organized manner following consistent modeling practices, they are relatively easy to navigate by an experienced mechanical designer.