Too late now
How do you know this?
Have you drained the extra quart of oil out of the engine yet?
Just because this happens on caterpillar engines doesn't mean that its going to happen on a Series II Supercharged GM engine.
Also, make sure you inspect the PCV system to see if there is oil in there.
Drain the extra oil out first, and see what the car sounds like.
If the seals aren't blown, and the oil isn't leaking out like the Exxon Valdez, then that right there proves its not the same as your caterpillar experiences.