67' to 73'+ Disc Swap Question

You are on your way. But...I am pretty sure if you are needing a new idler, a new pitman arm is required too...this is where it gets tricky.

The idler mounted to the K frame differently after 1968. Idler arms 68-72 are different to 73-76. You will need a cut from a 73up K frame to weld on (tricky) or a spool mount 73up K frame or a QA1 K frame. You will also need a 73up centerlink. Good luck finding THAT.

Happy to be corrected by the knowledge bank. Above is what I had to do for my 67 Dart Wilwood conversion. Oh, and I am in Australia. Freight and sourcing were challenges.