Thats bullshit, that key should have sheared off not bent over and sandwich like that... That's the exact thing that happened to my NA, when it was rebuilt, they never tightened the pulley bolt and it slung out at like 70mph... I thought I just hit a rock... Then about a week or so later, in my driveway *where all the bad shit happens* the crank pulley sheared the key and my pulley fell off... The crank had a bit of chipping but nothing major, I was able to salvage it... That LOOKS salvagable... Even though it looks like it imprinted a moon shape in the crank, so long as you can get it back on there and wrench that bolt to the proper torque spec, should be OK... Make sure to use thread lock, big time... Also, I would suggest measuring the inside diameter of the crank pulley to make sure its within tolerances... There shouldnt have been enough room between the inside of the pulley and the outside of the crank to squash it...