First.. WELCOME TO TTS...

.... SECOND.. PULL THE DUST SHIELD OFF.. see how many ears are on the flex plate.. I just changed the torque converter couple months ago on mine and it was a 6 bolt...
If the flexplate has six ears it's going to be a 6 bolt... Honestly can't imagine it being a three bolt with that much torque I would think would rip it apart.... I got mine through AutoZone which was only cuz I needed it right then and there... But not their brand... If I remember right I couldn't even find a listing for it on RockAuto..