Thought the bendix 76 began in 1976. and the 'Mag' chairing on that, was 'like' 69? BTW it's on backwards too. Plus ya gotta be careful on the 20" bikes. That's the right handle bar and stem the typhoon a Jr 20" bike came with. It wasn't a stingray but you could stretch the chain stays to fit an s-2 rim verses issued s-7's. Not a stingray collector at all but, do know you could get into a fit with one fer doing that to a jr bike to call it a stingray. I did that to a 20"-er in 1966 or 68 to put an s-2 on, but, I guess the distance on the fender bracket is how you can tell? Yeah seems to me I had to bend the duck tail fender to manage it too. ( turned out to be a stolen frame, the cops took away, I'd built up so, kinda not something easily forgotten)