K-member mounts

I have a 1969 Dodge Polara/Monaco Service Manual. Section 23 is entitled Body and Frame. I also have the two service manuals for 1971 Plymouth. Section 23 was split off and given its own manual. None of the frame diagrams have the four dimensions that you seek. They do indicate the recommended distance from the front k-member attaching hole to the “L” gauge hole on the body frame under the cowl. There is no dimension of any type for the two rearward attaching bolt holes. The only reference that might help you is from Gauge D to point B.