They will not guarantee replacement costs. Even Judge Judy will only reimburse you for the depreciated loss. That is unless you have a stated value policy. I have a 1966 convertible insured through J.C. Taylor with a stated value. And it just occurred to me that the value is not enough and should be updated. I also have additonal coverage for any parts that might be in the vehicle and no deductible.
Of course, I am limited to 1,000 miles a year, driving only in parades, cruises, etc., no driving to work or school. (They probably don't want me driving it to Wal-mart either, but then again I don't drive it to Wal-Mart.) But the good part is that the cost is only about $200 per year.