Trying to find the original owner?

[Als 70 L78 Nova]

I have tracked down two previous owners of my 1970 L78 Nova SS. I talked to the person in Orlando Florida who purchased the Nova from a used car lot in Orland Florida called Cumbie Hayward Used Cars in 1971. If you don't count the used car lot as an owner, I am assuming that this is owner number 2. He states that the car was indeed a real L78 4-speed car. Of course, the problem is that he has no idea who owned the car prior to Cumbie Hayward owning it. To make matters worse, Cumbie Hayward has since closed. Owner #2 did tell me who he sold the car to and I have also talked to this person (owner #3) who actually rebuilt the engine for owner #2 in the 70's and at that time asked for first refusal if owner #2 ever decided to sell it. Owner #3 also states that the car was a real L78 Nova SS 4-speed car. OK, does anyone out there have any ideas? I have an original title dated 8/16/96 in the name of the 3rd owner and it also shows the date of the previous title as 4/19/72. Can I get any info from the DMV in Florida? Any help would be greatly appreciated. Thanks, Al Barlow