Beechcraft C-12J Huron V02 USAF 3D model is available on CGTrader for $89. Original author: Dreamscape. Specs: 29622 polys, 15711 verts.
STL (Stereolithography, filesize: 456 KB), OBJ (OBJ, filesize: 919 KB), DWG (AutoCAD, filesize: 464 KB), DXF (DXF, filesize: 491 KB), TEXTURES (Textures, filesize: 3.03 MB), DAE (Collada, filesize: 494 KB), LWO (Lightwave, filesize: 190 KB), FBX (Autodesk FBX, filesize: 2.11 MB), MAX (Autodesk 3ds Max, filesize: 203 KB)