Tenth generation
1979
The R-body series was a "Pillared Hardtop." It now used the 318 V8; the 360 engine was optional through 1980. While shorter and much lighter than the previous generation, these cars still had a big car look and ride. Hidden headlamps and full-width taillights distinguished it from its R-body siblings Newport, St. Regis and Gran Fury. A new "Fifth Avenue" trim package was offered.
1980
In addition to last year's "Fifth Avenue" package, a limited production "Fifth Avenue Limited Edition" package was also offered featuring brushed stainless steel roof treatment and exclusive mahogany metallic paint.
1981
A bold new grille, with simple vertical ribs, appeared for 1981. “Fifth Avenue” option package was again available.
Source: Wikipedia
Chrysler New Yorker history:
Chrysler New Yorker (1st gen) 1940-1942
Chrysler New Yorker (2nd gen) 1946-1948
Chrysler New Yorker (3rd gen) 1949-1954
Chrysler New Yorker (4th gen) 1955-1956
Chrysler New Yorker (5th gen) 1957-1959
Chrysler New Yorker (6th gen) 1960-1964
Chrysler New Yorker (7th gen) 1965-1968
Chrysler New Yorker (8th gen) 1969-1973
Chrysler New Yorker (9th gen) 1974-1978
Chrysler New Yorker (10th gen) 1979-1981
Chrysler New Yorker (12th gen) 1983-1988
Chrysler New Yorker (13th gen) 1988-1993
Chrysler New Yorker (14th gen) 1994-1996