Custom interior (perforated vinyl trim)

Years 1963–79 Models 3 Factory citations 4

Also described as Custom exteriorCustom interior package

Documented applications

Impala / Full-Size

1963–70s (varies) Confirmed

Nova / Chevy II

1968–1969, 1971–1972, 1976 Factory-verified

GM Heritage factory kit — 1968 Chevrolet Nova Coupe, p.51.
GM Heritage factory kit — 1976 Chevrolet Nova, p.6.

Vega / Monza

1975–1977 Factory-verified

standard on Cosworth; cloth inserts optional

GM Heritage factory kit — 1975 Chevrolet Vega, p.66.
GM Heritage factory kit — 1977 Chevrolet Vega, p.8.

This page aggregates every documented appearance of ZJ1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.