Kevin Marti's "Marti Report" for '67-'93 Mustangs is documentation every owner should have because it is your Mustang's pedigree. It details your Mustang's order--original selling dealer, when the order was received and when it was actually assembled. It also details how it was optioned. Once you have the Marti Report, you have a starting point in your research. Marti Reports are not available for '65-'66 because Ford records prior to the '67 model year were destroyed.