-Nova/Chevy II-

They started beautiful in 1962 and ended ugly in 1979.

First gen=1962-1965

The Nova was a trim upgrade over the standard Chevy II.
Introduced in 1962 as Chevy's small econo car. Small, good gas mileage, but big enough for a family to take on vacation. Inline six, 194 CID, 120 HP.
They made a convertible in 1962 and 1963 only.
1963-The SS was available. The only year the SS was available as a convertible too. Still, only an I-6, 120 HP motor. Everything else was virtually the same as the year before.
1964-The first year of an available V8. 283 cid, 195 HP. Also, two other I-6's available-230 I6 140 HP. 230 I6 155 HP.
1965-The 327 was added to the lineup in two different versions, 250 HP and 300 HP. Coupled to a four speed and a 4.10 gear, the under 3000 lb Chevy II would scoot.
1966-Major body changes, same unibody construction and running gear as previous years. The 283 was offered in 195 HP and 220 HP and the 327 was offered in 275 HP and the rare L-79, 350 HP.
1967-No more L-79, only a few made it into the car. The grille was restyled a little, same taillights and most other trim and body parts as the 1966. Disc brakes became available.
They made a wagon from 1962-1967.
1962-1964 are four lug cars. 1965 and up are five lug. 1964-1967 are four wheel drum cars.
1962-1967 were all the same wheelbase, (110 inches), and smaller body style.
1968 and up was the big change and is aslo when the big block became available in the Nova.
Third gen=1968-1974. Good looking, high compression, four speed, super sport trim packages, musclecar looks and power up to 1971. 1972-1974, still good looks, diminishing power.
Fourth gen=1975-1979. Ugly, slow, heavy, smog vehicles with zero power. The dark ages for American auto manufacturers.

Every new vehicle is a failure in sales in Mexico. Most people can't afford shoes over there, let alone new transportation.

I can go deeper into the history of 1968 and later.