help understanding this texture map

[DroneGamer]

hi, i'm trying to modify a skin to put my driver number and some other sponsor, this is what i got

this is the normal skin, all right with this!

problem is with the map

i dont know what map type is that, and i need help to generate the new one with the skin that i made

 

[Stereo]

It's manually painted to match several finishes, probably chrome (pink), gloss stickers (teal), and metallic paint (dk blue)

Might not be obvious viewing it all composed, but the red/green/blue channels do different things, and typically you want the AO multiplied into red and blue.