What year frame

[CARR33]

My 67 has power steering. It was on there when i got it. After reading about power steering swaps i see where the 67 frame will hit the steering box without a spacer. My frame has the proper indentation for a power steering box. It doesnt appear to be heated and hammered in, it looks factory. Is there any way i can determine what year frame it is. I'm getting ready to do a front end rebuild and want to order the right parts. It has front disc brakes and the spindles look factory.