If the K in your 67 is original then it will have the one year only idler arm. I had a 67 Barracuda and swapped to a spool with discs and large ball joint UCAs - great swap.
The biscuit type k-member pictures in the first pic is a 68-72 unit with thru bolt idler.
The second K-member is a 73-76 spool type. Someone put a 72 and earlier steering gear, 67-72 pitman, 67-72 centerlink and 68-72 idler arm on it (not original but will work). So if you are replacing those mentioned suspension parts, don't get them for a 73-76 A-body.