K MEMBERS

Idler arm was stud mounted through '72, and through-bolted on '73 and later.

Not correct. The '67 idler arm had a stud at each end that goes into a tapered hole. '68-72 has a through-bolt on the k-member end and a tapered stud (pointing up) at the center link. '73-76 idler has a through-bolt on the k-member end and a tapered stud (pointing down) at the center link.