young gun 1968 dart

My dad does not know really, because its been sitting for 24 years were thinking that its a 8,000 mile car. The org owner sold it to the guy I bought it from. but the guy I bought it from did not title it or insure it or anything. so it only has one registered owner. when the guy who I bought it from got it,he just let it sit in his backyard for three years. The guy I bought it from bought a new head for it and its on it. what Im thinking is that The org. owner ran it until he hurt the head and then he parked it until this guy got it