Could be a unique project! Respect your enthusiasm as well!
Looks pretty complete, but definitely lived a couple lives over almost 50 years. Obviously not properly taken apart to paint at some point. Very odd someone has removed the aluminum paint code and vin placards and then reattached, doesn't look like it was just for painting either, I would have inspected by a body shop very familiar with 911/930 chassis to see if its been in a major accident. There is also a gentlemen that can verify the vin number stamped in the tub is legitimate. Service will cost you, but will give piece of mind the vin has not been re-stamped in another tub. the fact the vin drifts off at an angle and some of the digits are a fair bit off center seems a little odd, its got the stars on the end, but just looks a little odd to me, but hey maybe it was made on a Monday after a weekend at Volksfest in Stuttgart, ;-)
The vin inspection specialist:
https://www.instagram.com/kobus_cantraine/
he uses electron microscope technology along with references of Porsche vin stamps of the proper era to verify the vin jives.
I'd just recommend doing your diligence to verify accuracy, due to the fact I m sure this is not a cheap endeavor to attain, let alone to properly restore. Obviously you'll want matching numbers on the powertrain if at all possible as well.
Best of luck!