I am confused

or maybe I wasn't clear with my question and I confused you...lol

I DID "buy" theses game but I haven't actually brought them home yet to take them apart.
I don't know if I am missing something, but I am still new to the hobby
Here are a few more questions:
Why wouldn't I be able to see the housing
Aren't they just bolted on ?
Can I remove it from the housing/cab to look for markings?
Thanks
ED