Yours will be a 2.75" bore. Most have an 11" and a 10.4" clutch bolt pattern now. I bought and returned three a few years back untill I realised the kid behind the counter most likely didn't even know what a flywheel was. It's just all what comes up on the computer and the suppliers think Chev and Pontiac are one and the same. Not his fault, just doesn't know. You may have to go to a Pontiac performance vendor to get one. Or try a GM dealer.