Very sorry to hear that, hopefully the police can track it down before it's too late. The nerve of people never ceases to amaze me.
If you are looking for a 68 chevelle my chevelle guy above Columbus has one for sale. It was his sons car and was stolen from the high school parking lot but it was later found and returned.

Good luck and I hope everything will turn out to where you don't have to find another chevelle.

Thomas