I had the same experience a few years ago and my Camaro got
through it OK. In my case though, the spring broke as soon
as the garage door closed and it scared the crap out of
me. I heard it hit the wall, then bounce into some other
items, then eventually onto the roof of the Camaro. Good
thing I had a cover on it as well. Wonder what it would
have done if it hit me?
Immediately after this incident, I had the newer style coil
springs installed above my garage doors.
Start the search for the missing part, make sure somebody
didn't saw almost all the way through the eye-bolt wanting
you to believe that it was an accident.....
Besides, you might find an NOS L-88 hiding in one of those
boxes. BTW, if you find Jimmy Hoffa, let us know.
Steve