Absolutely. I saw a guy selling a '70 Newport "N" 'vert on eBay. He had a picture of the fender tag. It had a build date of 701! Mine is 630. He had a bid of $3,500 at the time. I wrote him and told him he had a very rare Newport, and suggested he cancel the auction and relist his car as a 383HP and possibly one of the last Newport ragtops made. Never heard from him.
A friend of mine had one, an early '70, but also a ragtop with an N. He wanted to put a 440 in it. He had no idea those were rare cars. In the end he sold it. He had a good deal on a '68 Road Runner ragtop, so I didn't blame him. Ha!
He offered the car to me for a great price but I couldn't afford it.