3D Modeler for Skull/Brain Animation

We are seeking a 3D modeler to create simple models and a basic animation of a brain moving within a skull. The ideal candidate should have experience in 3D design and animation, with a focus on delivering high-quality visuals. This is a part-time project with a short duration, perfect for high-level freelancers looking to showcase their modeling skill. We have professional models already purchased, so we just need some simple modifications. SKULL, JAW, BRAIN, and FACIAL MUSCLES all of which we already have. This can be done fast by those who know their trade well. It would take us about 6 hours ,but we need this done asap and do not have the bandwidth to do this in house at present.