A body K member

If you can fab, and can make a jig bracket, you could torch the idler arm mounts out of your 72 K and weld it into the 67. There was a thread recently on doing so, with pictures and ideas from previous threads on the subject.

You can also get aftermarket /6 to v8 conversion mounts but of course, money

And, you could also pull (carefully) the mounting towers off one K and weld it into the other, but this would require more jig/ brackets/ locating devices