Yup; a few cars had the 3.4 in it. All of the gears should be the same since the motor wasn't used that long. Here's the list...

1991–1994 Chevrolet Lumina Z34 and the Euro 3.4 sedan
1991–1996 Oldsmobile Cutlass Supreme
1991–1996 Pontiac Grand Prix GTP
1995–1997 Chevrolet Monte Carlo Z34
1995–1996 Chevrolet Lumina LS