I remember when raised white letter tires were "racey". My '73 Nova had'em. Firestone Wide Ovals. I was unclear what a wide oval might comprise, but I preferred having round tires.
the GT took that one step further. Not in terms of actual performance, as its only powerplant was the 258 (4.2 L) six, although it did pack a pretty decent 120 net hp for that era, thanks to a two-barrel carb. The 304 V8 had been cancelled back in 1976. But the ’78 Gremlins did get a badly needed new dashboard, shared with the Concord, and the GT got those big fender flares.