Wow. that looks amazing. Love the exposed framework on the doors - don't cover it up!
I think if you produce a subframe to mount to an existing kit chassis may open more markets (My brother had a Vitesse in the early 80s - not for me!). Cobra chassised Formosa with fire gargling V8 sounds very appealing but we're into IVA then. Could use sacrificial kit such as Tiger - well established and plenty of cheap already registered on the road jobs that wouldn't need all the overhauling. Bit like the Healey body that was offered for 7's for a while albeit it was way too basic.
That said top prices often depend on exclusivity...
Whatever the case - it's a winner! And I hear the GRP is pretty good too