Thanks for that info. Unfortunately, I do not have service tag information. Doesn't have to be exactly the way HP shows it in their system, just somewhere to browse the machines to check which part numbers are in them.
Such information does not exist! Not for the public like you and me, this is for sure! End of story.
None of the manuals provide any part numbers, anyone can have hundreds of them on their sites, but still there would not be a single part number!