First image - Marmoset render.
This model was created in Blender 2.81.
Shading is configured in the blender file.
Model have real size.
File includes:
-Base color map 4096x4096
-Roughness 4096x4096
-Metallic 4096x4096
-Metallic 4096x4096
And UE4 Packed
Please contact me in case of any questions or difficulties, I will help you)