The Impala / Caprice used that wrap around back window from 77 to 79.
Production totals for 78 are...
Impala Coupe 33,990
Impala Landau Coupe 4652
Caprice Coupe 37,301
Caprice Landau Coupe 22,771
Here in Chicago we saw tons of these cars when they were new.
The 1986 - 87 Monte Carlo SS Aero Coupe's used a rear window simialar if
not the same to the 77-79 Impala / Caprice. Only 200 Aero Copes were
made in 86, 6,052 were made in 87. Pontiac Grand Prix's also featured
that rear window around the same year period as the Monte Carlo.