I worked for the company that had ownership in Shelby American during the Series One days. We digitized the 427 and 289 glass bodies then built two master frames, one for each. Off the frames we built production tooling for both. This is the 289 FIA master frame. It was given a CSX # of 7004. I do not have an MSO. I can however support the authenticity of this unit. If you have questions please call my cell (586) 662-4899