K frame swap question

I have a 67 Barracuda v8 k frame that I want to swap w/my s/6 k frame on my 73 Swinger. Will this swap work? I know that the motor mounts a different but will it be a direct bolt up? Do I need to move the entire front end meaning....idler arm, center link, etc. I have 73 dart swinger disc brakes and a manuel steering box that are gonna bolt up to the 67 v8 k frame as well is that gonna be a problem?

I want to do this swap and put my 318 thats in my Swinger in the 67 K frame until my 5.7L is ready to be installed. The 318 is in the s/6 frame now using schmachers kit but I'm gonna have to change the K frame eventually to get the Hemi in there.

Thanks guyz
Jason