Is it possible to use Surface Appearance Normal Maps in unison with default roblox materials?

[Theoneandonly016789]

1. What do you want to achieve?
   I want to overlay normals, ambient occlusion and a texture over a mesh with default roblox materials overlayed on it, as i am planning on texturing a control panel, i want the bolts of it to be a normal map, and overlay a mesh texture over it,

2. possible solutions
   Texture transparency?

all i’m asking is: is it possible? Has anyone ever tried it?

[GamEditoPro]

Nope, it will completely override material. If you want smth like this, then create Surface appearance texture blended with roblox ones.