Interesting! So according to the chart, #12 would be P/N #2962012 for 70 E-Body with 318/340/383 engines.

This even though my #12 k-frame came off a 1971 B-Body 383 car???

Now I’m suspect because according to this Frank Adkins book:



66-to-72 B-Body and 70-to-74 E-body k-members ALL interchange the only variances being the sway bar mounts.

Now I’m going to have to dig out my original 68 Charger k-member and compare it to my 71 Charger #12 k-member.