I just remove the flexplate cover and put a 3/8" extension through one of the holes and go to town. When the motor rotates to the left the extension rotates up and against the block. You'll need a large breaker bar and a large muscle. I think the bolt is 22 or 24mm.
Is the flexplate cover?
2001 4dr Black GTP Stock and staying that was... maybe
1997 2dr Black GTP Open Cone, GXP Rims, Black Headlights, ZZP Headers, ZZP Cat Back, Bunch of suspension parts from ZZP, ZZP 10.5MM plug wires, Autolite 605s, Overkill Tune