Best way is using Space Engineers Toolbox if you have it.. (DL if you dont ;) )
Load your Save/World in which you have the mod activated and in the Menu select "World" --> "Component List"
Under Components you can find the SubTypeID..

Otherwise, Nickel Alloy Plates for example are (component/Nickel_Plate)

Thank you. I solved it by manually searching into the mod files. This is a lot easier!. By the way, compliments ont the work this far. With my hoarding OCD this has become my fav mod!