Check the warranty booklet, as it could have the previous owner's name and address. Mine has the first owner's name and I spoke with the second owner, who I bought the car from. The first owner was a social acquaintance of his so he knew the history as he bought the car directly from her. Do you know the original selling dealer of the car? They can be a big help.
Current Garage:
2005 Mustang GT Premium
2019 Ranger Lariat Super Crewcab 4WD
2015 Triumph Trophy SE
“You've gotta dance like there's nobody watching,
Love like you'll never be hurt,
Sing like there's nobody listening,
And live like it's heaven on earth.”
― William W. Purkey