Welcome to the site. I collect vital stats and information from Novas for the research database. Would you like to contribute information about your car?
You really need documents for definitive proof that a car is an SS.
I might be able to help you try to disprove the car is an SS.
That is easier than trying to prove it is. There are several things to look for to either disprove it or have it still in the might be an SS stage.