Grandfather's 68 SS Camaro.

[Too Many Projects]

There has been plenty of metal shavings in the oil from all that damage. I'm on the "pull the engine" wagon and remove the pan and inspect all the bearings. If the crank isn't scored but there is shavings in the bearings, you can get away with just replacing them.
If the cam is an old school, long duration build, there are better grinds available now that will help the engine have more vacuum and the same or better power range than what is in there.

Sorry you have to deal with this. This problem has become all to common in the past several years and especially recently.
I have a 20 year old Comp 280H in my 496 that sounds cool but is a pain in the butt to drive on the street. I'm going to be looking at a hydraulic roller conversion for next year.