Best table format/layout to use.

[mgnsllvn]

Hello everyone.

I am a new user with a relatively moderate knowledge of excel. I use it in on a day to day basis and have taken an advance excel course, but, since I don't regularly use advance techniques, I have lost some of that knowledge.
I have a specific problem what I am struggling with. I am trying to determine what is the best way to go about displaying my data, as well as making it easier to manipulate if needed.

I will try to explain this to the best of my ability.

I make parts for the Kia Seltos. Of that Kia Seltos, there are three potential variations that would require some of the same, and some different components. I need to list inventory levels of all the components, which will help me determine how much of a variation I could make.
Please see the attachment for more information. Hopefully this makes sense. I am wondering if the route that I am taking now, is the most efficient and viewer friendly.

I have tried making levels, but with the totals for each variation, it isn't quite working. Each total for the variations is not going to account for any other parts. Meaning we don't need to take other variations into consideration when coming up with the total/inventory levels.

I am familiar with pivot tables, so if I could figure out how to layout the source and pivot tables, I have no objection to trying that.

Thank you in advance for any help