Another Insurance question..

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I'm getting ready to pick my car up at BBT at the end of October. Its going to be moved around alot in the next 6 months. I called my insurance company (STATE FARM) and even though my truck and trailer are insured the contents are not???? I would have to insure the car seperately but they will not insure a uncomplete car let alone a ''classic muscle car''. So my question is how do you insure a uncomplete car ?