I've seen all the sources that you're quoting but none tally exactly with the info I have, which comes from what I consider to be a very authoritative source.
It's a Fiat-engined Pininfarina-bodied Cisitalia, yes, but a Cisitalia what, which engine and from when?
No-one has answered these questions correctly yet (assuming my source is correct, which I'm 99% sure it is).
It's open to all.