I scanned the interior of my rally car with the HandySCAN to build my cage. Pretty easy for what i needed as I didn't need the surface data and only wanted it as reference. So you need someone to scan, rebuild data into surfaces, then mirror parts and design tools to be laid up in? A fair amount of work for sure and cheaper to buy all new parts from
https://www.f-s-h.com/Backdate-911-Singer-Look_2