nDo2 + Photoshop, 2x 2048x2048 RGBA (diffuse base value - roughness - tiling dirtmap - transparency), 512x512 colour variation overlay, 2x 2048x2048 normal. Additional 1k diffuse & alpha for manufacturer decals. Very heavily driven by the shader in unreal & pure R, G and B vertex colour to separate colours per each hull…