Kawanishi H8K2 Emily 3D model is available on CGTrader for $89. Original author: chipbasschao. Specs: 65971 polys, 48589 verts.
STL (Stereolithography, filesize: 17.5 MB), OBJ (OBJ, filesize: 17.5 MB), 3DS (3D Studio, filesize: 17.5 MB), C4D (Cinema 4D, filesize: 17.5 MB), DAE (Collada, filesize: 17.5 MB), FBX (Autodesk FBX, filesize: 17.5 MB), LWO (Lightwave, filesize: 17.5 MB)