Re: 1970 Chevelle SS maybe
Even if you track down the original owner, if he/she doesn't have the original paperwork on the car (or knows where the born with motor is) your still out of luck. A story from the "original owner" doesn't provide the proof you need to state your car is an SS from the factory. Your best bet is to hunt for the build sheet. Assuming you still have the original tank ... run most of the fuel out of it, loosen the 2 bracket bolts holding the tank in place down to where you can get a light/mirror to see if a Build Sheet is there -- pretty quick and easy. I found mine in my backseat (easy to pull) but mine is a Baltimore Built car.
Some cars the build sheet is long gone or never placed in the car since it was supposed to be trashed, it is what it is at that point ... just enjoy the car.
TC Member # 5462
70 Chevelle SS/396 4-Speed
DYNO RWHP: 364HP @ 5200 RPM / 426 Torque @ 3500 RPM