Is Vehicle Customization Possible?

Hello, I have beet working on a vehicle with multiple meshes used for customization 3d modeled in external software, and I was wondering how would I go about making it possible to use a GUI to interact with the meshes to make the changeable within the car. I have thought of many ways of doing this such as setting the transparency of the desired mesh to become fully visible while the unselected ones are completely transparent. Another way which may be more intelligent way of doing it is loading the part within lighting or server storage, I think... The way I see going about this would be driving into a certain area which then gives the player the GUI to go through customization options for the player to choose/buy and so on. If you have any knowledge with what I am trying to do, please explain. I am in very desperate need of making this possible for a game I will be developing in the future :)