Well I was going to note that the Horizon vinyl model is very good and the mold is taken from a Stan Winston maquette. However, it's not the design that was eventually used in the film. That model was sent to Phil Tippet's stop motion team and was used in the animatics, which of course was not used. Stan Winston's team then did a 1/4 scale sculpt that was quite a bit different, a lot bulkier looking, that was used and blown up to create the full size and also provide a 3D scan model.