In all fairness, all American cars from that era basically sucked comparatively.
I had a 78 mustang II mach 1 with a 302, 123 hp? Something like that. Anemic. Could not power-brake a burnout on dry pavement.
My brother has a 78 Z28, 140 hp.
If you tried to rev it over 5000 it ate the cam. We got good at changing cams in that POS.
The 911s from the 70's weren't all that fast either and they had their issues.
It was the dark ages of automobiles. Now let's never speak of it again