Just unzip with folder names on inside the ( Pitts ) folder
You will find the ( Pitts_Special ) folder just put that right
Into your VSF's vehicles folder and you be good to go.
Please read the read-me there are a few things you need to know about keys.
Download Pitts Special Model:
http://allaircraftsimulations.com/Pitts.zip
Hope you all enjoy the Pitts.
John Marco