If you did not drive the car far the antifreeze may have not mixed with the oil to make it milky. Drain the oil. It is just a good practice. You will know right away. The water/antifreeze will come out first and then the oil.
Take Mike's advice on the grinding discs. Many of them have...
While you are checking things check the brake switch. It brakes the TCC circut when you press on the brake.
Check the crank sensor for the starting problem.
Detonation
That is what made the ends of the main bearing move inward and the cap walk. It was all over after that.
Same thing happened to the rod bearing in the third picture.
I was playing around on the computer and I found this. I figured I would chime in. I remember all of Jim's cars. Some of those parts may still have my fingerprints on them. As a matter of fact I saw the original 86 car at a shop I dyno my stock eliminator projects. It does bring back memories...