Just my opinion
See the fins on the side? That's a GNX. The regular Grand national didn't have them. At least my '85 didn't.
I think this was about 10 years ago by now, but one day I was at our friends' place - they were having a party. This was approximately early 40s, everyone's got kids and stuff, it's just a cook-out. I start talking to my friend's next door neighbor Bob, who I had gotten to know a bit over the years that they lived there. He was a nice guy, I think involved in boat-charters or something. Just a clean-cut looking white dude from the suburbs and whatnot.
So that day, though, we're just drinking a beer and chatting, and we started talking cars - sports cars in particular, of which I am also fond. He mentions that he had a Grand National when he was younger, and of course I was like "damn, that's a hot rod! Tell me about it . . . " So he goes on to tell me that not only did he have a Grand National, he had it set up for racing - additional aftermarket equipment and I think even nitrous at one point. And it was hella fast.
But this was illegal street racing in the outskirts of the DC area, like Maryland mostly. He was really good and got to be known as "Grand National Bob" - and I'm like "holy sheet! This story is awesome." He raced in all sorts of impromptu and planned street drag races - often for a lot of money. He said it actually got to be a bit dangerous, he developed a reputation and people would come looking for him. But his adventures as Grand National Bob went on for a couple of years.
He basically chose to retire. He sold the Grand National and left that chapter behind. HA! I asked him questions about like an interrogation for about an hour, great story.