In the A-Body world, PUI makes second rate seat covers, Legendary make their own and are considered the "gold standard" of replacement seat skins. Don't know how it shakes out in the F-body world.
1968 Oldsmobile Cutlass S Convertible
1978 Oldsmobile Starfire Firenza
1987 Oldsmobile 442
"Starfire, the Oldsmobile you didn't expect"