front bow and frame

[cktrap]

So I have several top frames. I went through three of them chose the best bow and had it repaired. I'm ready to start and the holes don't line up to bolt the bow to the frame. The holes are 13\16 center to center on the bow and 3\4 on the frame. The question is which one is the right one for my 70 model or do they both work? I do have the matching frame for the 13\16. What's up
Thanks
Keith