I added it here with a couple other cars in that episode

http://imcdb.org/movie.php?id=1998372

Try early in the second episode. Around the 3 minute mark, I believe. The front end is very visible. I tried to post a screencap, but it was too big apparently.

I skimmed the first episode and I didn't see a good shot of the front end, but it is the 1975-79 version, but I think it's in the 1976-78 range.

I'm looking for Jeb Pyre's (Andrew Garfield's) car on Hulu's Under the Banner of Heaven. Looks like a Chevy Nova, but I'm just not sure of the year.