It's scratch built. The model is made from 4lb rigid foam that I bought from a special effects house in California. It has a plexiglass frame based on the ILM model. It's covered in fiberglass with styrene and metal details. The nacelle wings are machined aluminum for strength, they were made at a local machine shop. The model was originally a "plug" for a mold but I decided I will make a another one 4' long for a mold process.
Thanks for the info I email Jt graphics with the specs.