How do I install these files? 

We have our files stored on Google Drive, so each file can be downloaded via the model-specific page. 

Based on what the enhancement is, make sure you read the READ ME file included in the download, or under the Install Instructions on each model's page.

Where do I buy the base models? 

The base models can only be bought directly from the Run8Studios page. A tab in the navigation bar directs you directly to the Run8Studios website.