Hagerty Insurance does send out emails as to auction results. Don't know if they are as detailed as you want. They also have a data base that gives values of collector cars. Not sure what it is based on. I talked with one guy and he had some type of book, that gave similar results. Hagerty's does graph the cost of a particular model over so many years. See, what the trend in price is.
I looked at a 67 Mustang convertible for someone. It did list the prices by sub models, such as engine type, convertible, GT etc. Gave a price also as to condition.