Check out T-34 Tank Chassis High-Poly 3D model on CGTrader for $199. High-quality Subdivision ready mesh by ryzhkov-3d-models: 2300000 polys, 2300000 vertices.
BLEND (Blender, filesize: 92 MB), OBJ (OBJ, filesize: 64.6 MB), FBX (Autodesk FBX, filesize: 105 MB)