Early A K-member help

A 62 Dart/Polara is a B body. 61-62 Lancers are A bodies.
Hi, Lee, how are you?

Yes, you are right, but remember that the Plymouth was produced as a "mid-sized' car in 1962 on the "B" body platform, when it was downsized at the last minute based upon Chrysler executive William Newberg's misunderstanding of what GM was going to do with the Chevrolet. (The full-sized Plymouth was put back on the "C" body platform in 1963.)

"Since they [i.e., the A and the B bodies] had to share body components...[.]" - William Brownlie, retired Chrysler design executive, discussing the last-minute changes necessary to produce the downsized car in '62 in the Collectible Automobile "Plymouth Super Sport" article, December, 1996, page 73.

If I am not mistaken, in 1962 and afterward, the "A" and "B" bodies shared the same K-member.

Feel free to correct me if I am wrong, but that is what some old timers and Wildcat Mopars told me when I built my '62 A-body resto rod starting in 2003. The '60-'61 A-body K-members were different.