K-member mounts

Does anyone have an accurate measurement for the 4 mounting holes for the k-member? Its in a 69 Dart and I assume all A-bodies would be the same, but we all know the problem with assuming so any help is appreciated. Looking for center to center on each side and across, diagonally as well if you have it but I can calculate that if I have the other measurements.

Any help on this would be appreciated- try to determine if I have a bent frame/k-member issue.

Thanks in advance!