The corvette surprised me!
They had almost a decade of relative dogs, they lowered the compression ratio on all engines in 1971 for "unleaded", and then maybe 1975-1983, from the introduction of the catalytic converters until the introduction of the 4th generation cars where they started to make some improvements.
The C4 was a little big and clunky for me, but it was a better chassis than the previous one in many ways. IMO they didn't get it right again until the C5 in 1997.
A cousin had a '65 375 hp 327 fuelie, and it was a genuinely fast car. My brother had a '69 which had a 350 with an honest 300 hp.
From then on, not so impressive until much later.
They've always looked pretty sporty though . . .