This car that I posted here, does have the 12 bolt rear with traction bar. I'm not sure if its a true SS. With a power glide I would tend to think so. Since L30 4 speed cars came with the traction bar. Is this a safe assumption? All SS cars came with traction bars. I know there was a start up date for that. But I am thinking that this car here would not have been a L30 car. Its a true SS. Everything else on the car matches. I mean the cowl hidden vin and all. This car does have A/C, tilt wheel and drum brakes too.