GM did not offer a 427 as a COPO or RPO in a Nova. ever. It would have to a dealer conversion. So if paper work was on the way why do you sell a possible 100,000 car for 20,000? The answer is you don't. If it does turn out to be a dealer conversion the seller should have done his home work before he put it on E-bay. Just my two cents worth. I like the old car, but the way people try to market their cars
m.