Look at the center hole in the flywheel. One side will be smooth while the other side flares out. The smooth side goes towards the motor. It's been a while since I looked at one but I think this then puts the raised spots where the three torque convertor bolts go to where they are raised towards the tranny.
I know if it is installed backwards the flare on the one side of the center hole keeps the face of the flywheel from bottoming out against the crank flange and if the bolts are tightened up normally you crack it. You should be able to get the flywheel in place and then have the face of the flywheel up against the face of the crank. There should be no gap that the bolts can bend the flywheel in on that area.