I've never experienced anything personally. But My mom owns a house in Rhode Island that was built well before the civil war too. The guy that takes care of it (Lives in a separate house farther away on the property) says he sees all kinds of weird things there all the time. I guess the lights...
What made you think it's shifted? And are the body mount bolts loose?
If it's really shifted, it's most likely because they (most of them, if not all) are loose.
Good call. People seem to think that people post stuff for sale and just sit there checking to see if anyone's still interested...like everyday for 6 years.
Ya I've got some in the past from Summit and always had good results. They have quite a few options too, depending on if you want to change things around or just want a "stock" type setup.
If price is a concern, go to a wrecking yard.
Yep that's the way to do it. Just don't re-use the media that you blast them with. With the chrome in there, you don't want to be blasting other stuff with it again.