I spent month's researching the tire before I opted to purchase this one. As it turns out there is a lot written about the N65 but very few visual aids to go on. Hopefully this thread will spark some interest by those who know.
The guy I bought it from sent me several photos of both his cars w/SSS. He also stated that he worked for GM back then and these were infact the correct tire's (but you know what they say...). All I can say is that he certainly convinced me. Again, we communicated for several weeks before I paid the outragous price and I do recall finding this same exact tire on so called original cars. Who knows...it could have been Tommy
I did a quick search and here is a pic of a, "Unrestored L89 Drag Strip Test-Super Chevy Magazine"... Notice the paint color, the markings on the rubber and the thread. Even though my pics do not show the thread, I think the two are identical. Also notice what he's doing to the canister