I do not have one, however I googled it and found one on a different iboats thread
https://forums.iboats.com/threads/omc-cobra-305-350-coil-wiring.773552/
again, any force strong enough to bend the crank would have busted the block.
pull the flywheel housing. then unbolt the coupler, inspect it. however as stated above, spend a few on a new coupler.
Your 'new-style' block is nearly identical to the older SBC. The crank, rods, and pistons are GMPP SBC parts in a Mercruiser supplied block
You are overthinking it