Hey Pauly
Hang in there......youve got a good car
It appears the crank thread, the bolt or probably both are flogged out, drill and tap for a new over size bolt, ( Industrial 609 loctite ) we use this stuff on our Mining gear, and get a grade 8 grip faced washer and rattle it up to 118 - 157 nm / 87 - 116 ft lbs
All will be good....
Cheers Mate