Like most sports cars, the Z got fat as it aged. The one/two combo punch of emissions and safety regulations worked over many a performance car throughout the ’70s, some not surviving the decade. The Z changed from SU-clone carbs, to finicky Hitachi flat-tops, to a Bosch fuel injection system over three years, all the while increasing displacement to handle the extra weight of massive bumpers. Enthusiasts may whine about the changes, but it seems market pressures added the pounds, too. In 1979, the 280ZX was released — a softer, more luxurious car than the predecessor.
Yet, it sold just as well, showing that Nissan were right about the market. New Z owners were pulling up to the valet at the disco, rather than carving canyons.