I was not sure that whether I would get a 3D model or a kind of software to build up the model, I got timely responses to my question . Also very nice models with a wide variety and at reasonable prices.
The Poly Shattering Generator is very straightforward and easy to use application, no overly complex controls/UI, easy to use and control as opposed to the standard shatter effect present in default maya, its so much more straightforward!
The biggest fear was that the model is not very detailed and far from the real crane. But when I open the model using an AutoCAD I found that the model was very very detailed even I can directly use it for an FEM simulation in other commercial software. 3D Models World could help you a lot in your projects.